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August 2021 temperature forecast contest
Roger Smith replied to Roger Smith's topic in Weather Forecasting and Discussion
I have the idea that this month will turn hot in the east towards the end, whether that overcomes a cool start or not remains to be seen, but will go a bit warmer than I might otherwise from the guidance available ... +1.5 _ +1.8 _ +2.0 __ +2.0 _ +1.5 _ +1.0 __ +1.5 __ -0.5 _ +0.8 -
CONTINUED REPORT ON WEEKLY EXTREMES for WEEKS ENDING IN APRIL Intervals _______________ Highest values 1869-2021 __ Lowest values 1869-2021 Mar 26 - Apr 1 ___________ (max) 78.43 _ 1998*_____ (max) 37.14 _ 1887 _ * 74.43 _ 1945 Mar 26 - Apr 1 ___________ (min) 56.57 _ 1998*______ (min) 20.43 _ 1923 _ * 53.86 _ 1945 Mar 26 - Apr 1 __________ (mean) 67.50 _ 1998*____ (mean) 30.21 _ 1887 _ * 64.14 _ 1945 _ the wettest week ending Apr 1 was 2010 (4.52") Mar 27 - Apr 2 ___________ (max) 78.29 _ 1998*_____ (max) 37.86 _ 1887 _ * 74.71 _ 1945 Mar 27 - Apr 2 ___________ (min) 57.86 _ 1998*______ (min) 19.57 _ 1923 _ * 55.00 _ 1945 Mar 27 - Apr 2 __________ (mean) 68.07 _ 1998*____ (mean) 30.36 _ 1923 _ * 64.86 _ 1945 _ the wettest week ending Apr 2 was 2005 (4.85") Mar 28 - Apr 3 ___________ (max) 75.00 _ 1998*_____ (max) 40.43 _ 1881 _ * 74.86 _ 1945 Mar 28 - Apr 3 ___________ (min) 56.57 _ 1998*______ (min) 20.71 _ 1923 _ * 54.29 _ 1945 Mar 28 - Apr 3 __________ (mean) 65.79 _ 1998*____ (mean) 31.93 _ 1923 _ * 64.57 _ 1945 _ the wettest week ending Apr 3 was 2005 (4.90") Mar 29 - Apr 4 ___________ (max) 70.57 _ 1945, 1986 __ (max) 39.43 _ 1881 Mar 29 - Apr 4 ___________ (min) 53.00 _ 1998 ______ (min) 25.57 _ 1923 _ * 52.14 _ 1945 Mar 29 - Apr 4 __________ (mean) 61.71 _ 1998*____ (mean) 35.07 _ 1881 _ * 61.36 _ 1945 _ the wettest week ending Apr 4 was 1987 (4.48") Mar 30 - Apr 5 ___________ (max) 68.57 _ 1981 _____ (max) 37.71 _ 1881 Mar 30 - Apr 5 ___________ (min) 53.71 _ 1981 ______ (min) 27.00 _ 1874 Mar 30 - Apr 5 __________ (mean) 65.14 _ 1981 ____ (mean) 33.21 _ 1881 _ the wettest week ending Apr 5 was 1987 (4.49") Mar 31 - Apr 6 ___________ (max) 70.14 _ 2010 _____ (max) 36.71 _ 1881 Mar 31 - Apr 6 ___________ (min) 52.14 _ 1981 ______ (min) 27.29 _ 1874 Mar 31 - Apr 6 __________ (mean) 60.00 _ 2010*____ (mean) 32.07 _ 1881 _ * 59.71 _ 1981 _ the wettest week ending Apr 6 was 1987 (4.64") Apr 1 - Apr 7 ___________ (max) 75.14 _ 2010 _____ (max) 38.29 _ 1881 Apr 1 - Apr 7 ___________ (min) 51.43 _ 2010 ______ (min) 26.29 _ 1881 Apr 1 - Apr 7 __________ (mean) 63.29 _ 2010 ____ (mean) 32.29 _ 1881 _ the wettest week ending Apr 7 was 1984 (4.37") Apr 2 - Apr 8 ___________ (max) 76.57 _ 2010 _____ (max) 40.00 _ 1881 Apr 2 - Apr 8 ___________ (min) 53.71 _ 2010 ______ (min) 26.14 _ 1881 Apr 2 - Apr 8 __________ (mean) 65.14 _ 2010 ____ (mean) 33.07 _ 1881 _ the wettest week ending Apr 8 was 1984 (4.37") Apr 3 - Apr 9 ___________ (max) 76.57 _ 2010*_____ (max) 42.43 _ 1881 _* 71.71_1929 (see low max -Apr 17, 18) Apr 3 - Apr 9 ___________ (min) 53.14 _ 1991, 2010 __ (min) 27.00 _ 1881 Apr 3 - Apr 9 __________ (mean) 64.86 _ 2010 ____ (mean) 34.71 _ 1881 _ the wettest week ending Apr 9 was 1984 (4.37") Apr 4 - Apr 10 ___________ (max) 77.71 _ 1991*_____ (max) 42.86 _ 1891, 2003 (also 43.71_1982) * _ 75.86 _ 2010 Apr 4 - Apr 10 ___________ (min) 55.00 _ 1991 ______ (min) 27.71 _ 1982 _ 29.86 _ 1975 Apr 4 - Apr 10 __________ (mean) 66.36 _ 1991 ____ (mean) 35.71 _ 1982 _ the wettest week ending Apr 10 was 1983 (5.68") Apr 5 - Apr 11 ___________ (max) 77.00 _ 1991*_____ (max) 43.14 _ 2003 * _ 75.86 _ 2010 Apr 5 - Apr 11 ___________ (min) 55.29 _ 1991 ______ (min) 29.00 _ 1982 Apr 5 - Apr 11 __________ (mean) 66.14 _ 1991 ____ (mean) 36.64 _ 1982 _ the wettest week ending Apr 11 was 1983 (5.68") Apr 6 - Apr 12 ___________ (max) 76.29 _ 1991*_____ (max) 43.00 _ 1894 * _ 74.71 _ 2010 Apr 6 - Apr 12 ___________ (min) 54.14 _ 1991 ______ (min) 30.43 _ 1982 Apr 6 - Apr 12 __________ (mean) 65.21 _ 1991 ____ (mean) 37.79 _ 1982 _ the wettest week ending Apr 12 was 1983 (5.68") Apr 7 - Apr 13 ___________ (max) 72.71 _ 1991*_____ (max) 44.14 _ 1894 * _ 71.57_2010, 70.71_1871 Apr 7 - Apr 13 ___________ (min) 52.29 _ 1991 ______ (min) 30.86 _ 1874 _ 31.00 _ 1880 Apr 7 - Apr 13 __________ (mean) 62.50 _ 1991 ____ (mean) 39.07 _ 1874 _ the wettest week ending Apr 13 was 1983 (5.68") Apr 8 - Apr 14 ___________ (max) 74.14 _ 2023*_____ (max) 45.29 _ 1935 * _ 73.14_1945, 71.14 _ 1922 Apr 8 - Apr 14 ___________ (min) 53.00 _ 2023* ______ (min) 30.29 _ 1874 * _ 52.29 _ 1945 Apr 8 - Apr 14 __________ (mean) 63.57 _ 2023* ____ (mean) 39.29 _ 1885 * _ 62.71 _ 1945 _ the wettest week ending Apr 14 was 1983 (5.59") Apr 9 - Apr 15 ___________ (max) 77.14 _ 2023* _____ (max) 42.43 _ 1885 _* 72.71 _ 1945 Apr 9 - Apr 15 ___________ (min) 56.14 _ 2023* ______ (min) 31.14 _ 1874 _ *53.00 _ 1945 Apr 9 - Apr 15 __________ (mean) 66.64 _ 2023* ____ (mean) 37.71 _ 1885 _ * 62.86 _ 1945 _ the wettest week ending Apr 15 was 2007 (8.95") Apr 10 - Apr 16 __________ (max) 79.14 _ 2023* _____ (max) 44.14 _ 1885 _ * 73.29 _ 2017 Apr 10 - Apr 16 __________ (min) 58.57 _ 2023*______ (min) 31.43 _ 1874 _ * 54.00 _ 2017 53.14 _ 1945 Apr 10 - Apr 16 _________ (mean) 68.86 _ 2023* ____ (mean) 39.36 _ 1885 _*63.64 _ 2017 _ the wettest week ending Apr 16 was 2007 (9.85") Apr 11 - Apr 17 __________ (max) 79.14 _ 2023* _____ (max) 44.43 _ 1929 (see Apr 3-9 1929 note) _ *76.43 _ 2002 Apr 11 - Apr 17 __________ (min) 60.14 _ 2023* ______ (min) 31.57 _ 1874 _ * 57.57_2002, 54.71 _ 2017 Apr 11 - Apr 17 _________ (mean) 69.64 _ 2023* ____ (mean) 40.50 _ 1929 _ * 67.00_2002, 64.00 _ 2017 _ the wettest week ending Apr 17 was 2007 (9.89") _ this was (tied with Apr 12-18) the highest weekly total for April. Apr 12 - Apr 18 __________ (max) 80.86 _ 2002*_____ (max) 43.43 _ 1929 _ * 76.71 _ 1977, 76.57 _ 2023 Apr 12 - Apr 18 __________ (min) 61.86 _ 2002* ______ (min) 31.57 _ 1875 _ *59.29 _ 2023 Apr 12 - Apr 18 _________ (mean) 71.36 _ 2002 ____ (mean) 37.57 _ 1875 _ *67.93 _ 2023 _ the wettest week ending Apr 18 was 2007 (9.89") _ this was (tied with Apr 11-17) the highest weekly total for April. Apr 13 - Apr 19 __________ (max) 85.43 _ 2002 _____ (max) 42.43 _ 1875 _ * 81.57 _ 1976 Apr 13 - Apr 19 __________ (min) 64.57 _ 2002 ______ (min) 29.71 _ 1875 Apr 13 - Apr 19 _________ (mean) 75.00 _ 2002 ____ (mean) 36.07 _ 1875 _ the wettest week ending Apr 19 was 2007 (8.52") Apr 14 - Apr 20 __________ (max) 85.43 _ 1976*_____ (max) 43.29 _ 1875 _ * 84.71 _ 2002, 79.86 _ 1941 Apr 14 - Apr 20 __________ (min) 64.57 _ 2002*______ (min) 29.57 _ 1875 _ * 61.14 _ 1976 Apr 14 - Apr 20 _________ (mean) 74.64 _ 2002*____ (mean) 36.43 _ 1875 _ * 73.29 _ 1976 _ the wettest week ending Apr 20 was 2007 (8.52") Apr 15 - Apr 21 __________ (max) 86.29 _ 1976*_____ (max) 42.00 _ 1875 * 82.57 _ 2002 Apr 15 - Apr 21 __________ (min) 63.57 _ 2002*______ (min) 29.00 _ 1875 _ * 62.00 _ 1976 Apr 15 - Apr 21 _________ (mean) 74.14 _ 1976*____ (mean) 35.50 _ 1875 _ * 72.86 _ 2002 _ the wettest week ending Apr 21 was 2007 (8.52") Apr 16 - Apr 22 __________ (max) 85.29 _ 1976 _____ (max) 41.14 _ 1875 Apr 16 - Apr 22 __________ (min) 61.57 _ 1976 ______ (min) 27.14 _ 1875 _ * 61.14 _ 2002 Apr 16 - Apr 22 _________ (mean) 73.43 _ 1976 ____ (mean) 34.14 _ 1875 _ the wettest week ending Apr 22 was 1983 (4.38") Apr 17 - Apr 23 __________ (max) 84.29 _ 1976 _____ (max) 42.86 _ 1875 Apr 17 - Apr 23 __________ (min) 60.71 _ 1976*______ (min) 27.43 _ 1875 Apr 17 - Apr 23 _________ (mean) 72.50 _ 1976 ____ (mean) 35.14 _ 1875 _ the wettest week ending Apr 23 was 2006 (3.57") Apr 18 - Apr 24 __________ (max) 80.29 _ 1976*_____ (max) 46.57 _ 1875 _ * 78.00 _ 1886 Apr 18 - Apr 24 __________ (min) 57.71 _ 1976*______ (min) 28.57 _ 1875 _ * 55.86 _ 1952 Apr 18 - Apr 24 _________ (mean) 69.00 _ 1976 ____ (mean) 37.57 _ 1875 _ the wettest week ending Apr 24 was 2006 (3.80") Apr 19 - Apr 25 __________ (max) 76.29 _ 1886 _____ (max) 49.29 _ 1875 Apr 19 - Apr 25 __________ (min) 54.00 _ 1952*______ (min) 29.86 _ 1875 _ * 53.86 _ 1869 Apr 19 - Apr 25 _________ (mean) 63.93 _ 1886 ____ (mean) 39.57 _ 1875 _ the wettest week ending Apr 25 was 1901 (3.98") Apr 20 - Apr 26 __________ (max) 74.29 _ 1886 _____ (max) 49.00 _ 1874 Apr 20 - Apr 26 __________ (min) 53.71 _ 1954 ______ (min) 32.57 _ 1875 Apr 20 - Apr 26 _________ (mean) 63.29 _ 1954 ____ (mean) 42.43 _ 1875 _ the wettest week ending Apr 26 was 1901 (3.98") Apr 21 - Apr 27 __________ (max) 77.57 _ 1962 _____ (max) 49.86 _ 1874 Apr 21 - Apr 27 __________ (min) 55.00 _ 1979 ______ (min) 34.86 _ 1875 Apr 21 - Apr 27 _________ (mean) 63.21 _ 1957 ____ (mean) 43.57 _ 1874 _ the wettest week ending Apr 27 was 1889 (4.12") Apr 22 - Apr 28 __________ (max) 79.86 _ 1962 _____ (max) 48.43 _ 1874 Apr 22 - Apr 28 __________ (min) 55.86 _ 1979 ______ (min) 36.00 _ 1874 Apr 22 - Apr 28 _________ (mean) 65.86 _ 2009 ____ (mean) 42.21 _ 1874 _ the wettest week ending Apr 28 was 1889 (4.16") Apr 23 - Apr 29 __________ (max) 79.00 _ 1962*_____ (max) 46.71 _ 1874 _ * 78.86 _ 2009 Apr 23 - Apr 29 __________ (min) 57.43 _ 1908*______ (min) 35.14 _ 1874 _ * 56.57 _ 1979 Apr 23 - Apr 29 _________ (mean) 66.93 _ 2009 ____ (mean) 40.93 _ 1874 _ the wettest week ending Apr 29 was 2023 (4.30") _ 1889 previous record (4.17") Apr 24 - Apr 30 __________ (max) 79.43 _ 2009 _____ (max) 47.43 _ 1874 Apr 24 - Apr 30 __________ (min) 57.00 _ 1908 ______ (min) 34.14 _ 1874 Apr 24 - Apr 30 _________ (mean) 67.57 _ 2009 ____ (mean) 40.79 _ 1874 _ the wettest week ending Apr 30 was 2014 (5.94") __________________________________________________________________________________ (note: the comment that follows was originally placed after some data in this post from July, later edited into monthly tables)
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July 2021 temperature forecast contest
Roger Smith replied to Roger Smith's topic in Weather Forecasting and Discussion
Final scoring for July 2021 Scoring is based on the projected anomalies last calculated in the previous post. PHX and BOS currently scored by minimum progression (max 60) as highest raw scores are 54 and 56. Scoring is probably final, BOS has to be confirmed but is likely to need the minimum progression as shown. Also the quality control step has not been passed at this point (where I double check scoring before adjusting the annual summary). FORECASTER _____________DCA_NYC_BOS__east__ORD_ATL_IAH__cent _ c/e _ DEN_PHX_SEA__west ___ TOTALS ___ Normal _________________98 _ 70 _ 66 __ 234 __ 80 _ 80 _ 78 __ 238 __ 472 __ 68 _ 64 _ 82__ 214 ____ 686 RodneyS __________________ 96 _ 60 _ 60^__ 216 __ 62 _98 _ 76__ 236 __ 452 __ 90 _ 60^_ 78 __ 228 ____ 680 wxallannj ___________________68 _ 30 _ 30^__ 128 __ 56 _ 74 _ 94 __ 224 __ 352 __ 98 _ 55^_ 78 __ 231 ____ 583 hudsonvalley21 ____________ 54 _ 36 _ 45^__ 135 __ 54 _ 64 _ 74 __ 192 __ 327 __ 96 _ 45^_ 90 __ 231 ____ 558 DonSutherland1 ____________58 _ 34 _ 50^__ 142 __ 50 _ 82 _ 82 __ 214 __ 356 __ 74 _ 40^_ 84 __ 198 ____ 554 wxdude64 __________________84 _ 20 _ 25^__ 129 __ 36 _ 88 _ 88 __ 212 __ 341 __ 94 _ 20^_ 66 __ 180 ____ 521 Scotty Lightning ____________58 _ 40 _ 55^__ 153 __ 60 _ 50 _ 38 __ 148 __ 301 __ 88 _ 30^_ 98 __ 216 ____ 517 Tom ________________________ 60 _ 32 _ 40^__ 132 __ 40 _ 58 _ 68 __ 166 __ 298 __ 96 _ 40^_ 82 __ 218 ____ 516 BKViking ____________________62 _ 28 _ 35^__ 125 __ 42 _ 70 _ 86 __ 198 __ 323 __ 78 _ 50^_ 60 __ 188 ____ 511 ___ Consensus _____________ 60 _ 30 _ 32^__ 122 __ 44 _ 62 _ 76 __ 182 __ 304 __ 94 _ 32^_ 74 __ 200 ____ 504 Deformation Zone ___________68 _ 30 _ 25^__ 123 __ 40 _ 50 _ 98 __ 188 __ 311 __ 62 _ 30^_ 68 __ 160 ____ 471 so_whats_happening ________62 _ 24 _ 15^__ 101 ___ 46 _ 58 _ 66 __ 170 __ 271 __ 72 _ 15^_ 70 __ 157 ____ 428 RJay ________________________ 38 _ 10 _ 10^__ 058 __ 30 _ 60 _ 78 __ 168 __ 226 __ 72 _ 15^_ 68 __ 155 ____ 381 Roger Smith ________________ 58 _ 26 _ 10^__ 094 __ 14 _ 50 _ 48 __ 112 ___ 206 __ 52 _ 05^_ 48 __ 105 ____ 311 _________________________________________________ EXTREME FORECAST REPORT DCA _ At -0.1, a win for RodneyS with coldest forecast (-0.3). Normal also has a win. NYC _ At -1.5, a win for RodneyS with coldest forecast (+0.5). Normal also scores a win. BOS _ At -1.5 or lower, a win for RodneyS with coldest forecast (+0.5). Normal also scores a win. ORD _ At -1.0, a win for RodneyS with coldest forecast (+0.9). Normal also scores a win. ATL _ At -1.0, a win for RodneyS with coldest forecast (-0.9). IAH _ At -1.1, this is a loss for BKViking with coldest forecast (-1.8) and a win for Deformation Zone with second coldest (-1.0). PHX _ At -1.8, a win for RodneyS with coolest forecast (+0.5). Normal also scores a win. SEA _ At +0.9, a win for Scotty Lightning with coldest forecast (+1.0). summary: 6 wins for RodneyS, five for Normal, one each for Scotty Lightning and Deformation Zone. A loss for BKViking. __________ DEN (+1.6) finished closer to our consensus than the other eight and does not qualify for an extreme forecast. __________ I may need a bit of extra time to get to the annual update, scores are generally close together for most and there won't be much change in the order. ___________ _ _ _ _ _ Annual scoring summary will follow when these numbers are confirmed (only small adjustments are likely). -
Summer 2021 maximum temperature forecast contest _ results posted
Roger Smith replied to Roger Smith's topic in Mid Atlantic
The CF6 now saying 97F for DCA on 26th ... which makes these the highest so far ... _____________________________________________DCA_ IAD_ BWI_ RIC Updated highs for the year as of July 27th __ 97 _ 97 _ 99 _ 96 Lots of time left for these to increase. -
CONTINUED REPORT ON WEEKLY EXTREMES for WEEKS ENDING IN MARCH Note for weeks ending March 1 to 6, some can start in leap years on Feb 24 to Feb 29, and others in non-leap years start from Feb 23 to Feb 28. The entries for those dates show the most extreme values first, and then the most extreme examples from the other set (as it turns out, a majority of the overall extremes are in leap years). This division is not employed for highest precipitation totals (the extremes can include leap year day, or not). Space is available for secondary extremes but they are only valid within the sub-groups when shown. (ly = leap years, and nly = non leap years ... the overall extremes are underlined for weeks ending Mar 1-6, the order of presentation is leap years, then non leap years.) Intervals _______________ Highest values 1869-2021 __ Lowest values 1869-2021 Feb 24 - Mar 1 ly ________ (max) 63.29 _ 1976 (ly) __ (max) 29.86 _ 1876 (ly) (Feb 23 - Mar 1) nly ______ (max) 60.71 _ 2017 (nly) _ (max) 24.43 _ 1934 (nly) Feb 24 - Mar 1 ly ________ (min) 40.00 _ 1976 (ly) __ (min) 16.71 _ 1920 (ly) (Feb 23 - Mar 1) nly _____ (min) 45.43 _ 2017 (nly) __ (min) 10.86 _ 1934 (nly) Feb 24 - Mar 1 ly _______ (mean) 51.64 _ 1976 (ly) ___ (mean) 24.29 _ 1920 (ly) Feb 24 - Mar 1 nly ______ (mean) 53.07 _ 2017 (nly) __ (mean) 17.64 _ 1934 (nly) _ the wettest week ending Mar 1 was 2010 (4.80") _ included 20.9" snow Feb 25 - Mar 2 ly ________ (max) 61.71 _ 1976 (ly) __ (max) 30.00 _ 1884 (ly) (Feb 24 - Mar 2) nly ______ (max) 60.57 _ 2017 (nly) _ (max) 26.00 _ 1934 (nly) Feb 25 - Mar 2 ly ________ (min) 41.00 _ 1976 (ly) __ (min) 15.43 _ 1920 (ly) (Feb 24 - Mar 2) nly _____ (min) 44.14 _ 2017 (nly) __ (min) 13.00 _ 1934 (nly) Feb 25 - Mar 2 ly _______ (mean) 51.36 _ 1976 (ly) ___ (mean) 22.93 _ 1920 (ly) (Feb 24 - Mar 2) nly ____ (mean) 52.36 _ 2017 (nly) __ (mean) 19.50 _ 1934 (nly) _ the wettest week ending Mar 2 was 2010 (3.61") _ included 20.9" snow Feb 26 - Mar 3 ly ________ (max) 56.86 _ 1972,76 (ly) *__ (max) 28.00 _ 1884 (ly) _ * 55.14 2024 (Feb 25 - Mar 3) nly ______ (max) 56.14 _ 2017 (nly) _ (max) 30.71 _ 1886 (nly) Feb 26 - Mar 3 ly ________ (min) 39.29 _ 1976 (ly) __ (min) 15.86 _ 1980 (ly) (Feb 25 - Mar 3) nly _____ (min) 40.71 _ 1902,1998 (nly) __ (min) 14.86 _ 1886 (nly) Feb 26 - Mar 3 ly _______ (mean) 48.07 _ 1976 (ly) ___ (mean) 22.64 _ 1884 (ly) (Feb 25 - Mar 3) nly ____ (mean) 47.71 _ 2017 (nly) __ (mean) 22.79 _ 1886 (nly) _ the wettest week ending Mar 3 was 2010 (3.26") _ included 20.9" snow Feb 27 - Mar 4 ly ________ (max) 58.29 _ 1880 (ly)* __ (max) 25.71 _ 1884 (ly) _ * 55.71 2024 (Feb 26 - Mar 4) nly ______ (max) 54.00 _ 1997 (nly) _ (max) 29.14 _ 1886 (nly) Feb 27 - Mar 4 ly ________ (min) 40.14 _ 2024 (ly) __ (min) 14.29 _ 1884 (ly) (Feb 26 - Mar 4) nly _____ (min) 41.14 _ 1998 (nly) __ (min) 13.57 _ 1886 (nly) Feb 27 - Mar 4 ly _______ (mean) 48.71 _ 1880, 2004 (ly) _ (mean) 20.00 _ 1884 (ly) (Feb 26 - Mar 4) nly ____ (mean) 47.36 _ 1998 (nly) __ (mean) 21.36 _ 1886 (nly) _ the wettest week ending Mar 4 was 1991 (3.23") _ included 8.9" snow Feb 28 - Mar 5 ly ________ (max) 58.86 _ 1880*(ly) __ (max) 24.00 _ 1884 (ly)_ * 56.86 _ 1972 (Feb 27 - Mar 5) nly ______ (max) 56.14 _ 1961 (nly) _ (max) 28.00 _ 1886 (nly) Feb 28 - Mar 5 ly ________ (min) 42.14 _ 2004* (ly) __ (min) 11.14 _ 1884 (ly) _ * 1880 _ 41.71 (Feb 27 - Mar 5) nly _____ (min) 40.57 _ 1998 (nly) __ (min) 15.71 _ 1886 (nly) Feb 28 - Mar 5 ly _______ (mean) 50.29 _ 1880 (ly) ___ (mean) 17.57 _ 1884 (ly) (Feb 27 - Mar 5) nly ____ (mean) 47.14 _ 1991 (nly) __ (mean) 21.86 _ 1886 (nly) _ the wettest week ending Mar 5 was 1914 (3.11") _ included 14.5" snow Feb 29 - Mar 6 ly ________ (max) 59.14 _ 2004 (ly) __ (max) 24.43 _ 1884 (ly) (Feb 28 - Mar 6) nly ______ (max) 58.43 _ 1991 (nly) _ (max) 31.14 _ 1978 (nly) Feb 29 - Mar 6 ly ________ (min) 44.29 _ 2004 (ly) __ (min) 12.14 _ 1872 (ly) (Feb 28 - Mar 6) nly _____ (min) 41.43 _ 1979 (nly) __ (min) 16.86 _ 1869 (nly) Feb 29 - Mar 6 ly _______ (mean) 51.71 _ 2004 (ly) ___ (mean) 18.93 _ 1884 (ly) (Feb 28 - Mar 6) nly ____ (mean) 49.57 _ 1991 (nly) __ (mean) 24.64 _ 1886 (nly) _ the wettest week ending Mar 6 was 1914 (3.40") _ included 17.4" snow Mar 1 - Mar 7 ___________ (max) 59.57 _ 1991 _____ (max) 27.43 _ 1884 Mar 1 - Mar 7 ___________ (min) 44.00 _ 2004 ______ (min) 11.71 _ 1872 Mar 1 - Mar 7 __________ (mean) 51.14 _ 2004 ____ (mean) 20.57 _ 1872 _ the wettest week ending Mar 7 was 2018 (3.65") _ included 3.2" snow Mar 2 - Mar 8 ___________ (max) 57.57 _ 1974 _____ (max) 28.57 _ 1888 Mar 2 - Mar 8 ___________ (min) 44.14 _ 2024* ______ (min) 13.00 _ 1872 _ * 42.43 _1979, 2004 Mar 2 - Mar 8 __________ (mean) 50.29 _ 2024* ____ (mean) 21.64 _ 1872 _ 42.43 _ * 49.64_1974 _ the wettest week ending Mar 8 was 1967 (3.49") _ included 2.0" snow Mar 3 - Mar 9 ___________ (max) 59.00 _ 1946 _____ (max) 29.57 _ 1888 Mar 3 - Mar 9 ___________ (min) 44.00 _ 2024 ______ (min) 14.14 _ 1872 Mar 3 - Mar 9 __________ (mean) 49.79 _ 2024*____ (mean) 22.64 _ 1888 _ * 49.43 _ 1946 _ the wettest week ending Mar 9 was 1967 (3.49") _ included 2.0" snow Mar 4 - Mar 10 __________ (max) 60.14 _ 2000 _____ (max) 30.71 _ 1888 Mar 4 - Mar 10 __________ (min) 43.14 _ 1979 ______ (min) 15.86 _ 1872, 1883 Mar 4 - Mar 10 _________ (mean) 50.57 _ 2000 ____ (mean) 23.57 _ 1872 _ the wettest week ending Mar 10 was 1967 (3.49") _ included 2.0" snow Mar 5 - Mar 11 __________ (max) 62.29 _ 2016 _____ (max) 32.29 _ 1960 Mar 5 - Mar 11 __________ (min) 42.57 _ 2016 ______ (min) 16.29 _ 1883 Mar 5 - Mar 11 _________ (mean) 52.43 _ 2016 ____ (mean) 24.50 _ 1883 (25.07 _ 1960) _ the wettest week ending Mar 11 was 2011 (4.09") Mar 6 - Mar 12 __________ (max) 64.86 _ 2016 _____ (max) 32.83 _ 1960 Mar 6 - Mar 12 __________ (min) 44.29 _ 2016 ______ (min) 17.43 _ 1883, 1960 Mar 6 - Mar 12 _________ (mean) 54.57 _ 2016 ____ (mean) 25.14 _ 1960 _ the wettest week ending Mar 12 was 2011 (4.08") Mar 7 - Mar 13 __________ (max) 67.43 _ 2016 _____ (max) 31.71 _ 1874 Mar 7 - Mar 13 __________ (min) 46.86 _ 2016 ______ (min) 16.86 _ 1885 _ 17.43 _ 1960 Mar 7 - Mar 13 _________ (mean) 57.14 _ 2016 ____ (mean) 25.00 _ 1885 _ the wettest week ending Mar 13 was 2010 (4.07") Mar 8 - Mar 14 __________ (max) 66.14 _ 2016 _____ (max) 31.14 _ 1874 Mar 8 - Mar 14 __________ (min) 47.43 _ 2016 ______ (min) 16.57 _ 1885 Mar 8 - Mar 14 _________ (mean) 56.79 _ 2016 ____ (mean) 25.07 _ 1885 _ the wettest week ending Mar 14 was 2011 (4.08") Mar 9 - Mar 15 __________ (max) 65.43 _ 1990*_____ (max) 31.71 _ 1874, 1896 _ * 64.71 _ 2016, 63.43 _ 1977 Mar 9 - Mar 15 __________ (min) 47.00 _ 2016 ______ (min) 19.14 _ 1885 Mar 9 - Mar 15 _________ (mean) 55.86 _ 2016 ____ (mean) 25.93 _ 1885 _ the wettest week ending Mar 15 was 1953 (5.08") Mar 10 - Mar 16 _________ (max) 70.29 _ 1990 _____ (max) 31.29 _ 1896 Mar 10 - Mar 16 _________ (min) 47.57 _ 2016 ______ (min) 20.00 _ 1900 Mar 10 - Mar 16 ________ (mean) 57.64 _ 1990*____ (mean) 26.00 _ 1896 _ * 55.29_2016, 54.50_1977 _ the wettest week ending Mar 16 was 1953 (5.10") Mar 11 - Mar 17 _________ (max) 73.00 _ 1990 _____ (max) 30.71 _ 1900 Mar 11 - Mar 17 _________ (min) 46.57 _ 1990 ______ (min) 17.14 _ 1900 Mar 11 - Mar 17 ________ (mean) 59.79 _ 1990 ____ (mean) 23.93 _ 1900 _ the wettest week ending Mar 17 was 1953 (5.10") Mar 12 - Mar 18 _________ (max) 72.00 _ 1990 _____ (max) 31.86 _ 1900 Mar 12 - Mar 18 _________ (min) 47.00 _ 1990* ______ (min) 16.14 _ 1885 (17.00 1888) _ * 45.86 _ 2024 Mar 12 - Mar 18 ________ (mean) 59.50 _ 1990 ____ (mean) 25.50 _ 1885 _ the wettest week ending Mar 18 was 1953 (5.30") Mar 13 - Mar 19 _________ (max) 71.43 _ 1990*_____ (max) 30.71 _ 1877 _ * 66.14 _ 1945, 64.71 _ 1927 Mar 13 - Mar 19 _________ (min) 48.00 _ 2012 ______ (min) 18.29 _ 1885 Mar 13 - Mar 19 ________ (mean) 59.00 _ 1990*____ (mean) 25.93 _ 1885 _ * 55.93 _ 2012 _ the wettest week ending Mar 19 was 1953 (4.64") Mar 14 - Mar 20 _________ (max) 70.00 _ 1945 _____ (max) 30.00 _ 1877 (31.29 1885) Mar 14 - Mar 20 _________ (min) 48.14 _ 2012*______ (min) 17.14 _ 1916 _ * 47.14 _ 1945 Mar 14 - Mar 20 ________ (mean) 58.57 _ 1945*____ (mean) 23.93 _ 1916 _ * 55.93 _ 2012 _ the wettest week ending Mar 20 was 1983 (3.37") Mar 15 - Mar 21 _________ (max) 71.00 _ 1945 _____ (max) 29.00 _ 1885 (31.29 1877) Mar 15 - Mar 21 _________ (min) 49.14 _ 2012*______ (min) 16.29 _ 1885 (16.71 1916) _ * 47.14_1945 Mar 15 - Mar 21 ________ (mean) 59.07 _ 1945*____ (mean) 22.64 _ 1885 * 56.21 _ 2012 _ the wettest week ending Mar 21 was 1983 (4.46") Mar 16 - Mar 22 _________ (max) 67.71 _ 1945*_____ (max) 25.71 _ 1885 (30.43 1967) _* 67.00_2012, 66.43_2010, 64.43_1948) Mar 16 - Mar 22 _________ (min) 51.00 _ 2012 ______ (min) 13.14 _ 1885 (19.29 _ 1967) Mar 16 - Mar 22 ________ (mean) 59.00 _ 2012 ____ (mean) 19.43 _ 1885 (24.86 1967) _ the wettest week ending Mar 22 was 1983 (4.46") Mar 17 - Mar 23 _________ (max) 70.57 _ 2012 _____ (max) 24.29 _ 1885 (30.86 1967) Mar 17 - Mar 23 _________ (min) 53.14 _ 2012*______ (min) 11.86 _ 1885 _ * 48.86 _ 2010 Mar 17 - Mar 23 ________ (mean) 61.86 _ 2012 ____ (mean) 18.07 _ 1885 _ the wettest week ending Mar 23 was 1983 (4.46") Mar 18 - Mar 24 _________ (max) 71.00 _ 2012 _____ (max) 26.00 _ 1885 _ * 67.57 _ 1938 Mar 18 - Mar 24 _________ (min) 53.43 _ 2012 ______ (min) 13.00 _ 1885 (21.71 1888) _ * 48.86 _ 2010 Mar 18 - Mar 24 ________ (mean) 62.21 _ 2012 ____ (mean) 19.50 _ 1885 _ the wettest week ending Mar 24 was 1983 (4.46") Mar 19 - Mar 25 _________ (max) 69.29 _ 2012*_____ (max) 27.57 _ 1885 _ * 67.86 _ 1938 Mar 19 - Mar 25 _________ (min) 53.29 _ 2012*______ (min) 16.00 _ 1885 (22.14 1888) _ * 48.57 _ 2010 Mar 19 - Mar 25 ________ (mean) 61.29 _ 2012 ____ (mean) 21.79 _ 1885 _ the wettest week ending Mar 25 was 1876 (6.75") _ includes 1.5" snow Mar 20 - Mar 26 _________ (max) 66.43 _ 2012*_____ (max) 29.86 _ 1885 _ * 65.00 _ 1913, 63.86 _ 1921 Mar 20 - Mar 26 _________ (min) 50.29 _ 2012*______ (min) 17.86 _ 1885 (23.29 1888) _ * 46.57 _ 1938 Mar 20 - Mar 26 ________ (mean) 58.36 _ 2012*____ (mean) 23.86 _ 1885 _ * 55.21 _ 1913 _ the wettest week ending Mar 26 was 1876 (6.81") _ includes 1.5" snow _ _ _ this is the highest weekly amount within March including cases using days from other months. Mar 21 - Mar 27 _________ (max) 66.57 _ 2021*_____ (max) 34.71 _ 1885 _ * 66.00 _ 1913 Mar 21 - Mar 27 _________ (min) 46.71 _ 1903, 2012*__ (min) 21.86 _ 1885 (22.86 1888) _ * 46.57 _ 1938 Mar 21 - Mar 27 ________ (mean) 56.50 _ 2021 ____ (mean) 28.29 _ 1885 _ the wettest week ending Mar 27 was 1876 (6.16") _ includes 0.5" snow. Mar 22 - Mar 28 _________ (max) 66.86 _ 1946*_____ (max) 35.00 _ 1888 _ * 65.14 _ 1949 Mar 22 - Mar 28 _________ (min) 48.71 _ 1949 ______ (min) 23.00 _ 1888 Mar 22 - Mar 28 ________ (mean) 56.93 _ 1949 ____ (mean) 29.00 _ 1888 _ the wettest week ending Mar 28 was 1876 (4.66") _ includes 0.5" snow Mar 23 - Mar 29 _________ (max) 71.43 _ 1945*_____ (max) 35.86 _ 1888 _ * 68.00 _ 1946, 65.71 _ 1949 Mar 23 - Mar 29 _________ (min) 49.29 _ 1945*______ (min) 25.29 _ 1887 _ * 47.71 _ 2021 Mar 23 - Mar 29 ________ (mean) 60.36 _ 1945 ____ (mean) 30.79 _ 1888 _ the wettest week ending Mar 29 was 1876 (4.88")_ includes 0.5" snow Mar 24 - Mar 30 _________ (max) 73.57 _ 1945*_____ (max) 39.71 _ 1887 _ * 70.29_1998, 69.14_1946, 66.00_1949 Mar 24 - Mar 30 _________ (min) 52.29 _ 1945*______ (min) 23.86 _ 1887 _ * 49.71_1998 Mar 24 - Mar 30 ________ (mean) 62.93 _ 1945 ____ (mean) 31.79 _ 1887 _ the wettest week ending Mar 30 was 1876 (4.88")_ includes 0.5" snow Mar 25 - Mar 31 _________ (max) 75.57 _ 1998*_____ (max) 38.57 _ 1887 _ * 73.57 _ 1945 Mar 25 - Mar 31 _________ (min) 54.29 _ 1998*______ (min) 23.14 _ 1923 _ * 53.43 _ 1945 Mar 25 - Mar 31 ________ (mean) 64.93 _ 1998*____ (mean) 31.07 _ 1885 _ * 63.50 _ 1945 _ the wettest week ending Mar 31 was 1876 (4.88") _ includes 0.5" snow __ __ this is the last maximum weekly amount that includes measurable snow until Nov 9-15 (1892).
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I think you'll have a very hot August, when this western heat ridge flattens out a bit more even if only half of its effect reaches the east coast it will be like 1944 with prolonged mid to high 90s. Where I live (about 150 miles north of Spokane WA near the border) we have averaged an incredible 100F for a max over thirty days now. Normal here is about 86F. These super hot temperatures broke records set in mid-July 1941. If you look at what happened after that, the temperature often went above normal in the east and peaked in early October in relative terms, with October's highest temperature at NYC of 94F recorded. So in that case it took about 2.5 months for the heat to translate east. It may be a bit faster this time, if not then September may be the most anomalous month.
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Historic Pacific Northwest Heatwave of 2021
Roger Smith replied to donsutherland1's topic in Climate Change
I am old enough to remember the 1966 heat wave in the east and this reminds me of that, weeks of mid to high 90s with low humidity levels, a few slightly cooler days in between and no significant rainfall. But in terms of anomaly this is more significant (1966 peaked around 98 to 100 F at various locations), the only thing I can really compare this to would be the 1936 heat wave in some parts of the central U.S., or maybe in terms of anomaly, Dec 2015 in many areas. This is a fairly warm area in an average summer but quite often we don't get this sort of weather until about now, having it from mid-June onward is the really odd part. Late June usually brings one or two cool and wet intervals and July is rarely this dry, August more often has a long dry spell that breaks towards the end of the month.- 323 replies
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Historic Pacific Northwest Heatwave of 2021
Roger Smith replied to donsutherland1's topic in Climate Change
If today and tomorrow average 37 C here, there will be a 30-day interval from June 17 to July 16 with an average high of 37 C. That is about 7 to 8 deg above normal (C deg = 1.8 F deg). Quite the anomaly, I would imagine the previous maximum anomaly in the summer in this region was half of that. Normally the next 30 days are the hottest portion of the summer so if this goes on another 30 days ... well I hope it doesn't, the results will not be good if it stays this hot and dry (in the 30 days the official rainfall is 0.8 mm which is not enough to drown the spiders building webs in the rain gauge. At my location I estimate 3-5 mm fell (it was just one brief interlude about a week ago that has left no trace).- 323 replies
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Tracking The 3”+ Heavy Rainfall Events Since 2010
Roger Smith replied to bluewave's topic in New York City Metro
I will guess August 9-10. -
Record July rainfalls (2021 will pass 1919 in 6th place with any new measurable rainfalls) and what these months had recorded after 13 days in brackets ... 1. 1889 __ 11.89" (2.08") 2. 1975 __ 11.77" (5.08") 3. 1897 ___ 9.56" (3.29") 4. 1928 ___ 8.89" (6.10") 5. 1880 ___ 8.53" (5.22") 6. 1919 ___ 8.50" (0.86") 7. 2021 was 8.49" after 13th 8. 1997 ___ 8.39" (1.70") 9. 1960 ___ 8.29" (1.90") 10. 1988 ___ 8.14" (0.69") ______________________________________________ Looks like 2021 is easily going to get to third place and may be edging into top spots near the end of the month (from the current guidance, would say another inch likely by 25th and then more speculative heavy rainfalls depicted near end of the month). In the weekly summary thread that I started recently, I noted that 2021 had broken weekly rainfall records for several consecutive intervals and the peak amounts (6.58" ending 12th and 13th) represent the second highest totals for any week fully within July with 6.75" from 25th to 31st 1889 the only higher value. Also these were the wettest weeks at NYC since June 7-13 2013 had over seven inches of rain. They were also the wettest weeks at NYC for any week ending June 14 to July 30 (1869 to present).
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Heavy rainfalls in the past week have broken a number of the existing weekly totals as noted in the tables. The 6.58" peak amount for weeks ending July 12 and 13 represents the second highest July weekly total, only 25-31 of 1889 surpassed this with 6.75". Going back, the last week (in the calendar year) to exceed 6.58" was June 7-13 (2013, record 7.37") and as it turns out that is also the most recent weekly total higher than these recent peaks.
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CONTINUED REPORT ON WEEKLY EXTREMES for WEEKS ENDING IN FEBRUARY Intervals _______________ Highest values 1869-2021 __ Lowest values 1869-2021 Jan 26 - Feb 1 ___________ (max) 57.71 _ 2002*_____ (max) 22.86 _ 1936 _ * 56.29 _ 1916 Jan 26 - Feb 1 ___________ (min) 41.29 _ 2002 ______ (min) 6.14 _ 1935 Jan 26 - Feb 1 __________ (mean) 49.50 _ 2002*____ (mean) 15.07 _ 1936 _ * 47.86 _ 1916 _ the wettest week ending Feb 1 was 1976 (3.71") Jan 27 - Feb 2 ___________ (max) 55.43 _ 2002 _____ (max) 22.43 _ 1881, 1936 Jan 27 - Feb 2 ___________ (min) 40.14 _ 2002 ______ (min) 6.14 _ 1935 Jan 27 - Feb 2 __________ (mean) 47.79 _ 2002*____ (mean) 15.93 _ 1936 _ * 46.00 _ 1989 _ the wettest week ending Feb 1 was 1973 (6.03") _ included 1.8" snow\ __ __ this is the highest weekly total that includes any days in February. See Feb 21-27 and 22-28 for all __ __ __ days within February. Jan 28 - Feb 3 ___________ (max) 53.14 _ 2006*_____ (max) 21.29 _ 1881 _ * 52.71 _ 2002 Jan 28 - Feb 3 ___________ (min) 40.14 _ 2006 ______ (min) 8.14 _ 1888 (9.29 _ 1961) Jan 28 - Feb 3 __________ (mean) 46.64 _ 2006 ____ (mean) 15.29 _ 1881 _ the wettest week ending Feb 3 was 1973 (4.54") _ included 1.8" snow. Jan 29 - Feb 4 ___________ (max) 52.86 _ 1991 _____ (max) 21.57 _ 1881 Jan 29 - Feb 4 ___________ (min) 41.00 _ 2006 ______ (min) 8.57 _ 1881 Jan 29 - Feb 4 __________ (mean) 46.71 _ 2006 ____ (mean) 15.07 _ 1881 _ the wettest week ending Feb 4 was 1973 (3.99") _ included 1.8" snow Jan 30 - Feb 5 ___________ (max) 55.71 _ 1991 _____ (max) 22.29 _ 1881 (23.86 1918) Jan 30 - Feb 5 ___________ (min) 40.00 _ 2006 ______ (min) 7.57 _ 1881 Jan 30 - Feb 5 __________ (mean) 46.50 _ 1991*____ (mean) 14.93 _ 1881 * _ 46.36 _ 2006 _ the wettest week ending Feb 5 was 1915 (3.95") _ included 6.1" snow Jan 31 - Feb 6 ___________ (max) 56.43 _ 1991 _____ (max) 21.14 _ 1886 Jan 31 - Feb 6 ___________ (min) 39.00 _ 2006 ______ (min) 6.86 _ 1918 (8.29, 1881,86) Jan 31 - Feb 6 __________ (mean) 46.71 _ 1991 ____ (mean) 14.71 _ 1886 _ the wettest week ending Feb 6 was 1920 (4.41") _ included 17.0" snow Feb 1 - Feb 7 ___________ (max) 55.71 _ 1991 _____ (max) 20.57 _ 1886 Feb 1 - Feb 7 ___________ (min) 39.00 _ 1991 ______ (min) 7.71 _ 1886 (8.00 1881) Feb 1 - Feb 7 __________ (mean) 47.36 _ 1991 ____ (mean) 14.14 _ 1886 _ the wettest week ending Feb 7 was 1920 (4.43") _ included 17.5" snow Feb 2 - Feb 8 ___________ (max) 57.43 _ 1991*_____ (max) 19.14 _ 1895 _ * 51.14 _ 2019 Feb 2 - Feb 8 ___________ (min) 41.43 _ 1991 ______ (min) 6.14 _ 1895 Feb 2 - Feb 8 __________ (mean) 49.43 _ 1991 ____ (mean) 12.64 _ 1895 _ the wettest week ending Feb 8 was 1920 (4.43") _ included 17.5" snow Feb 3 - Feb 9 ___________ (max) 58.00 _ 1991 _____ (max) 17.43 _ 1895 Feb 3 - Feb 9 ___________ (min) 42.43 _ 1991 ______ (min) 4.43 _ 1895 (4.57 1934) Feb 3 - Feb 9 __________ (mean) 50.21 _ 1991 ____ (mean) 10.93 _ 1895 _ the wettest week ending Feb 9 was 1920 (4.43") _ included 17.5" snow Feb 4 - Feb 10 __________ (max) 55.86 _ 1991 _____ (max) 16.43 _ 1895 Feb 4 - Feb 10 __________ (min) 42.00 _ 1991 ______ (min) 3.71 _ 1934 (5.29 1895, 6.43 1875) Feb 4 - Feb 10 _________ (mean) 48.93 _ 1991 ____ (mean) 10.86 _ 1895 (13.36 1934, 14.93 1875) _ the wettest week ending Feb 10 was 1920 (4.63") _ included 19.1" snow Feb 5 - Feb 11 __________ (max) 53.43 _ 1990*_____ (max) 16.43 _ 1895 _ * 51.29 _ 2023 Feb 5 - Feb 11 __________ (min) 38.57 _ 1991 ______ (min) 3.86 _ 1934 (6.14 1895) Feb 5 - Feb 11 _________ (mean) 45.21 _ 1991 ____ (mean) 11.29 _ 1895 _ the wettest week ending Feb 11 was 1896 (3.21") _ included 1.5" snow Feb 6 - Feb 12 __________ (max) 54.71 _ 1990*_____ (max) 18.00 _ 1899 _ * 51.14 2023, 51.00 2009, 50.29 _ 1925 Feb 6 - Feb 12 __________ (min) 38.43 _ 1965, 2024*__ (min) 5.57_ 1934 (7.57 1899) _ * 37.71 2023, 36.29_1990 Feb 6 - Feb 12 _________ (mean) 45.50 _ 1990*____ (mean) 12.79 _ 1899 (14.21 1885) _ * 45.07_2024, 44.43_2023, 43.57_1925 _ the wettest week ending Feb 12 was 1896 (3.20") _ included 1.5" snow Feb 7 - Feb 13 __________ (max) 54.29 _ 1990*_____ (max) 15.14 _ 1899 _ * 52.71 2009, 51.86 2023, 51.57 1898 Feb 7 - Feb 13 __________ (min) 39.00 _ 2024* ______ (min) 5.00 _ 1899 (6.00 1934) _ * 38.71_2023, 38.14 1965, 37.43_1956 Feb 7 - Feb 13 _________ (mean) 45.29 _ 2023, 2024 _ (mean) 10.07 _ 1899 _* 45.21_1990 _ the wettest week ending Feb 13 was 1886 (3.41") Feb 8 - Feb 14 __________ (max) 55.00 _ 1990*_____ (max) 14.57 _ 1899 _ * 53.43 2023, 51.43 2009, 51.29 1898 Feb 8 - Feb 14 __________ (min) 40.14 _ 2023* ______ (min) 3.00 _ 1899 (4.71 1934) _* 38.57 1898 Feb 8 - Feb 14 _________ (mean) 46.79 _ 2023*____ (mean) 8.79 _ 1899 _ * 45.64_1990, 44.57_1966 _ the wettest week ending Feb 14 was 1886 (3.41") Feb 9 - Feb 15 __________ (max) 55.43 _ 2023*_____ (max) 15.14 _ 1899 _ * 52.71 _ 1990, 52.43 _ 1966 Feb 9 - Feb 15 __________ (min) 41.29 _ 2023* ______ (min) 4.00 _ 1899 (6.57 1979) _*39.29 1966 Feb 9 - Feb 15 _________ (mean) 48.36 _ 2023* ____ (mean) 9.57 _ 1899 (13.57 1979) _*45.86 1966 _ the wettest week ending Feb 15 was 1869 (3.50") Feb 10 - Feb 16 _________ (max) 57.57 _ 2023*_____ (max) 18.86 _ 1899 _ * 55.00_2018, 52.14_1984 Feb 10 - Feb 16 _________ (min) 43.29 _ 2023*______ (min) 7.00 _ 1979 (8.00 1899) _* 40.14_1984, 39.71_1966 Feb 10 - Feb 16 ________ (mean) 50.43 _ 2023*____ (mean) 13.43 _ 1899 (13.71 1979) _ * 46.14_1984 46.00_2018, 45.64_1966 _ the wettest week ending Feb 16 was 1869 (3.50") Feb 11 - Feb 17 _________ (max) 57.57 _ 2023*_____ (max) 19.29 _ 1979 (22.29 1958) _ * 53.57_2018, 53.43_1976 Feb 11 - Feb 17 _________ (min) 41.86 _ 1984*______ (min) 6.71 _ 1979 (7.43 1914) _* 41.43 2023 Feb 11 - Feb 17 ________ (mean) 49.50 _ 2023*____ (mean) 13.00 _ 1979 (15.14 1914) _ * 46.86_1984, 44.50_2018 _ the wettest week ending Feb 17 was 1886 (3.41") Feb 12 - Feb 18 _________ (max) 57.14 _ 2023* ____ (max) 19.14 _ 1979 (22.29 1958) _ *52.29 1880, 1984 Feb 12 - Feb 18 _________ (min) 41.86 _ 1984* ______ (min) 6.29 _ 1979 (8.00 1899) _*40.14 2023 Feb 12 - Feb 18 ________ (mean) 48.64 _ 2023* ____ (mean) 12.71 _ 1979 _ *47.07 1984 _ the wettest week ending Feb 18 was 1869 (3.14") _ included 2.0" snow Feb 13 - Feb 19 _________ (max) 57.43 _ 2023*_____ (max) 20.43 _ 1979 (23.43 1958) _ *55.00 1949 Feb 13 - Feb 19 _________ (min) 41.43 _ 1984* ______ (min) 8.00 _ 1979 (11.14 1958) _*40.00 2023 Feb 13 - Feb 19 ________ (mean) 48.71 _ 1949*____ (mean) 14.21 _ 1979 (16.71 1958) _ * 46.21 1949, 46.07_1984 _ the wettest week ending Feb 19 was 1869 (3.20") _ included 2.5" snow Feb 14 - Feb 20 _________ (max) 58.00 _ 2023*_____ (max) 23.43 _ 1958 (26.29 2015) _ * 56.71_1954, 55.71_1949 Feb 14 - Feb 20 _________ (min) 42.29 _ 1984* ______ (min) 9.43 _ 2015 (12.29 1958) _ *40.86 2023 Feb 14 - Feb 20 ________ (mean) 49.43 _ 2023*____ (mean) 17.00 _ 1979 (17.86 1958, 2015) _ * 47.86 1981, 47.00_1984 _ the wettest week ending Feb 20 was 1898 (3.82") Feb 15 - Feb 21 _________ (max) 58.29 _ 1954*_____ (max) 25.00 _ 1923 (26.29 2015) _ * 57.43_2023 56.86_2018 56.43_1981 Feb 15 - Feb 21 _________ (min) 43.14 _ 1981*______ (min) 9.00 _ 1896, 2015 _* 42.29_1984 40.43 2023 Feb 15 - Feb 21 ________ (mean) 49.79 _ 1981*____ (mean) 17.64 _ 2015 _ * 48.93 2023, 48.64_1954 _ the wettest week ending Feb 21 was 1898 (3.92") Feb 16 - Feb 22 _________ (max) 57.71 _ 1981*_____ (max) 25.57 _ 1885 _ * 56.86_1954 56.43_2018 Feb 16 - Feb 22 _________ (min) 44.71 _ 1981 ______ (min) 6.43 _ 1896 Feb 16 - Feb 22 ________ (mean) 51.21 _ 1981*____ (mean) 16.57 _ 1896 _ the wettest week ending Feb 22 was 1898 (3.81") Feb 17 - Feb 23 _________ (max) 56.71 _ 1981*_____ (max) 22.86 _ 1885 _ * 56.14_2017, 55.86_2022, 55.43_1997 Feb 17 - Feb 23 _________ (min) 45.29 _ 1981 ______ (min) 9.43 _ 1896 Feb 17 - Feb 23 ________ (mean) 51.00 _ 1981*____ (mean) 17.57 _ 1885 _ the wettest week ending Feb 23 was 1898 (3.88") _ included 0.3" snow Feb 18 - Feb 24 _________ (max) 60.29 _ 2017*_____ (max) 23.00 _ 1885 _ * 57.14_1997 Feb 18 - Feb 24 _________ (min) 45.57 _ 1981*______ (min) 12.29 _ 2015 _* 43.57 _ 2017 Feb 18 - Feb 24 ________ (mean) 51.93 _ 2017*____ (mean) 18.14 _ 1885 _ * 50.00_1930 _ the wettest week ending Feb 24 was 1898 (3.88") _ included 0.3" snow Feb 19 - Feb 25 _________ (max) 63.29 _ 1930*_____ (max) 24.57 _ 1885 _ * 60.29 _ 2017 Feb 19 - Feb 25 _________ (min) 45.00 _ 1930*______ (min) 11.00 _ 1914 (12.43 2015) _ * 44.86_2017 Feb 19 - Feb 25 ________ (mean) 54.14 _ 1930*____ (mean) 18.71 _ 1914 _ * 52.57_2017 _ the wettest week ending Feb 25 was 1898 (3.88") _ included 0.3" snow Feb 20 - Feb 26 _________ (max) 63.29 _ 1930*_____ (max) 26.43 _ 1885 _ * 58.71_1985 Feb 20 - Feb 26 _________ (min) 44.00 _ 1930*______ (min) 9.71 _ 1914 (13.00 1934) _* 43.86_1996 Feb 20 - Feb 26 ________ (mean) 53.64 _ 1930*____ (mean) 18.93 _ 1914 _ * 50.71_1985 _ the wettest week ending Feb 26 was 2010 (4.82") _ included 20.9" snow Feb 21 - Feb 27 _________ (max) 60.00 _ 1985*_____ (max) 26.43 _ 1934 _ * 59.00_1930 Feb 21 - Feb 27 _________ (min) 43.86 _ 1996 ______ (min) 12.14 _ 1914 (13.29 1934) Feb 21 - Feb 27 ________ (mean) 51.36 _ 1985 ____ (mean) 19.86 _ 1934 _ the wettest week ending Feb 27 was 2010 (4.83") _ included 20.9" snow _ _ this total (tied with 22nd-28th 2010) is the highest weekly total where all days are in February. Feb 22 - Feb 28 _________ (max) 59.57 _ 1985*_____ (max) 25.14 _ 1934 _ * 58.71_1976 Feb 22 - Feb 28 _________ (min) 43.71 _ 2017 ______ (min) 12.43 _ 1934 Feb 22 - Feb 28 ________ (mean) 51.29 _ 2017*____ (mean) 18.79 _ 1934 _ * 50.50_1985 _ the wettest week ending Feb 28 was 2010 (4.83") _ included 20.9" snow _ _ this total (tied with 21st-27th 2010) is the highest weekly total where all days are in February. _ leap years only qualify for these records _ Feb 23 - Feb 29 _________ (max) 59.57 _ 1976 _____ (max) 30.57 _ 1876 Feb 23 - Feb 29 _________ (min) 39.86 _ 2000*______ (min) 18.00 _ 1876 _* 37.57_1976 Feb 23 - Feb 29 ________ (mean) 48.57 _ 1976*____ (mean) 24.29 _ 1876 _ * 44.64_1880 _ the wettest week ending Feb 29 was 1869 (2.39") _ included 0.1" snow Record values for non-leap year weeks starting Feb 23 and ending March 1 can be seen in the March listings where each entry ending Mar 1 to Mar 6 is divided into leap year and non-leap-year cases.
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July 2021 temperature forecast contest
Roger Smith replied to Roger Smith's topic in Weather Forecasting and Discussion
Anomalies and projections ... _________________________ DCA _ NYC _ BOS _ ORD _ ATL _ IAH _ DEN _ PHX _ SEA 11th __ (10d anom) _____ -2.0 _ -2.2 _ -3.7 __ -2.2 _ -2.4 _ -3.1 __ +1.9 _ +2.4 _ +1.3 21st __ (20d anom) _____+0.1 _ -0.9 _ -2.2 __ -2.8 _ -2.4 _ -2.1 __ +0.6 _ +0.8 _ -0.1 27th __ (26d anom) ____- 0.1 _ -1.2 _ -1.6 ___ -1.5 _ -1.7 _ -1.4 ___ +1.2 _ -1.9 _ +0.1 11th __ (p20d anom) ___ -0.5 __ 0.0 _ -0.5 __ -2.0 _ -2.0 _ -2.5 __ +2.0 _ +2.5 _ +2.5 11th __ (p27d anom) ___ +0.5 _ +1.0 _ +0.5 __ -1.5 _ -1.5 _ -2.0 __ +2.0 _ +2.5 _ +2.5 21st __ (p31d anom) ___ -0.5 _ -1.5 _ -2.5 ___ -2.5 _ -2.5 _ -2.0 __ +1.0 __ 0.0 _ +0.5 27th __ (p31d anom) ___ -0.5 _ -1.5 _ -2.0 ___ -2.0 _ -1.5 _ -1.5 __ +1.5 _ -1.5 _ +0.5 final anomalies _________ -0.1 _ -1.5 _ -1.7 ___ -1.0 _ -1.0 _ -1.1 ___ +1.6 _ -1.8 _ +0.9 ____________________________________ 11th _ Forecasts for both ten and sixteen days pretty much similar, eastern and most of central U.S. stay in a rather cool shallow trough situation that will maintain slightly below normal temperatures, and the west stays hot, again the biggest anomalies between SEA and DEN (my current temperature near 100F). 14th _ Models have changed their output considerably for the east so I have adjusted the projections for the eastern locations. (turned out by too much as the earlier estimates were closer than the new ones) ... 21st _ Taking the current anomalies forward with little change as the pattern seems fairly static, the western warmth is definitely centered between SEA and DEN and well north of PHX in relative terms, running about +5 here. May post some provisional scores in a while. 27th _ Anomalies updated, PHX dropped quite sharply with two days that had unusual -15 to -20 anomalies due to cloud and thunderstorm activity (highs only in 80s). 31st-1st _ Final anomalies are now posted and BOS is now confirmed after the table had the 31st missing data (for most of Aug 1-2). Scores have not changed there because it was assumed that minimum progression would be needed. Scores are being updated after final anomalies confirmed (this note will be removed when the scoring is all adjusted). -
Historic Pacific Northwest Heatwave of 2021
Roger Smith replied to donsutherland1's topic in Climate Change
Not done with the heat yet, back up to around 38 C in southern BC today. We had a nice break for about 2-3 days, and last night's low of 15 C was welcome. Temperatures inside non-a/c buildings have returned to fairly comfortable values but now we have a few more days of this reduced brand of heat. By the way I had assumed the Warfield climate station was actually in Warfield, but it appears to be about a mile north in a decommissioned industrial facility formerly associated with the Trail smelter, and located about 0.5 miles west of the highway running north out of Trail, in fairly flat and barren land that is largely exposed rock and dirt. So it's not quite as sheltered as I thought it might be if in the village of Warfield which has a lot of trees around. Thus I would modify previous comments about adding a degree to get Trail BC equivalent readings, this site is probably as barren and exposed as any part of Trail even if slightly higher above sea level. I would call them on this site choice except for the fact that much of the urban area of Trail is similarly rocky and barren so perhaps it is a good choice to be representative. Up the hill here there is a lot more shade from trees that survived the smelter years. It did not feel like that shade was doing us a lot of good back in the severe heat wave however. Another interesting observation -- the Columbia River is running quite high and fast, due to snow melt at high elevations up around the Revelstoke region. It had peaked in late May and early June at fairly moderate levels, as it usually does in these flood-controlled times (Trail used to get some fairly severe flooding in the spring runoff), but now it's at least a foot and probably two feet higher. There is a huge infestation of moths in some parts of the Columbia valley, driving at night exposes you to a mass casualty event that needs extensive car cleaning work the next day. It sounds like driving through a hailstorm.- 323 replies
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Longest Dry Spells at NYC These lists rank the longest absolute dry spells (no precip over a trace amount), and extended dry spells (low precip totals that do not exceed .01" for every two consecutive days in the EDS). ____ ABSOLUTE DRY SPELLS ________________ EXTENDED DRY SPELLS _______ Rank _ Year ___ Days ___ Duration __________ Rank _ Year ___ Days, amt ___ Duration (longest ADS) _01 ___ 1924 ___ 36 ___ Oct 9 to Nov 13 _____ 01 ___ 1995 ___ 46 (.18") __ July 29 to Sep 12 (24, 12) _02 ___ 1941 ___ 28 ___ Sep 5 to Oct 2 ______ 02 ___ 1924 ___ 44 (.01") __ Oct 9 to Nov 21 (36) t03 ___ 1884 ___ 27 ___ Sep 1 to 27 __________03 ___ 1952 ___ 43 (.21") __ Oct 3 to Nov 14 (8, 8) t03 ___ 1910 ____27 ___ Sep 10 to Oct 6 _____t04___ 1901 ___ 40 (.20") __ Oct 15 to Nov 23 (16, 11) t05 ___ 1939 ___ 26 ___ Nov 6 to Dec 1 _____ t04___ 1949 ___ 40 (.12") __ May 27 to July 5 (19, 14) t05 ___ 1973 ___ 26 ___ Oct 3 to 28 _________t06 ___ 1874 ___ 38 (.14") __ Oct 11 to Nov 17 (10, 9) t05 ___ 2001 ___ 26 ___ Apr 22 to May 17 ___ t06 ___ 1905 ___ 38 (.19") __ Oct 21 to Nov 27 (12) t08 ___ 1942 ___ 25 ___ Apr 11 to May 5 ____ t06 ___ 1910 ____ 38 (.19") __ Sep 7 to Oct 14 (27) t08 ___ 1968 ___ 25 ___ Feb 4 to 28 ________ t06 ___ 2001 ___ 38 (.17") __ Oct 17 to Nov 23 (17, 15) t 10 ___ 1922 ___ 24 ___ Sep 13 to Oct 6 _____t10 ___ 1882 ___ 34 (.08") __ July 20 to Aug 22 (13) t 10 ___ 1980 ___ 24 ___ Jan 23 to Feb 15 ___ t10 ___ 1899 ___ 34 (.17") __ May 12 to Jun 14 (15) t 10 ___ 1963 ___ 24 ___ Oct 4 to 27 _________t12 ___ 1881 ___ 33 (.10") __ Aug 8 to Sep 9 (11) t 10 ___ 1995 ___ 24 ___ Aug 7 to 30 _________t12 ___ 1943 ___ 33 (.13") __ Nov 23 to Dec 25 (13,19) t 14 ___ 1877 ___ 23 ___ Dec 7 to 29 _________t12 ___ 1999 ___ 33 (.16") __ July 3 to Aug 4 (9) t 14 ___ 1991 ___ 23 ___ Oct 18 to Nov 9 _____t15 ___ 1886 ___ 32 (.13") __ Aug 8 to Sep 8 (14) t_14 ___ 2015 ___ 23 ___ Apr 23 to May 15 ___t15 ___ 1886 ___ 32 (.06") __ Sep 24 to Oct 25 (20) _ 17 ___ 1988 ___ 22 ___ Nov 29 to Dec 20 ___t15 ___ 1947 ___ 32 (.11") __ Sep 27 to Oct 28 (12, 9) t 18 ___ 1870 ___ 21 ___ Aug 27 to Sep 16 ____t15 ___ 1963 ___ 32 (.14") __ Sep 30 to Oct 31 (24) t 18 ___ 1895 ___ 21 ___ Feb 9 to Mar 1 ______ t19 ___ 1903 ___ 31 (.11") __ May 7 to June 6 (12,15) t 18 ___ 1904 ___ 21 ___ Aug 23 to Sep 12 ____t19 ___ 1955 ___ 31 (.12") __ Nov 21 to Dec 21 (14) t 18 ___ 1908 ___ 21 ___ Sep 7 to Sep 27 _____t19 ___ 1966 ___ 31 (.09") __ June 18 to July 18 (11) t 18 ___ 1917 ____21 ___ Oct 31 to Nov 20 ____t19 ___ 1989 ___ 31 (.16") __ Nov 29 to Dec 29 (14, 14) t 18 ___ 1962 ___ 21 ___ June 27 to July 17 __ 23 ___ 1909 ___ 30 (.14") __ Oct 24 to Nov 22 (12) t 24 ___ 1886 ___ 20 ___ Sep 24 to Oct 13 ___t24 ___ 1877-78_29 (.04") __ Dec 6 to Jan 3 (23) t 24 ___ 1944 ___ 20 ___ Aug 23 to Sep 11 ___t24 ___ 1880 ___ 29 (.11") __ May 1 to 29 (17) t 24 ___ 1999 ___ 20 ___ May 25 to June 13 __t24 ___ 1884 ___ 29 (.08") __ Aug 31 to Sep 28 (27) t 27 ___ 1914 ___ 19 ___ Sep 26 to Oct 14 ____t24 ___ 1973 ___ 29 (.03") Sep 30 to Oct 28 (26) t 27 ___ 1917 ___ 19 ___ Sep 9 to 27 __________t24 ___ 1985 ___ 29 (.14") __ Oct 6 to Nov 3 (10) t 27 ___ 1938 ___ 19 ___ Aug 12 to 30 ________t24 ___ 2001 ___ 29 (.07") Apr 22 to May 20 (26) t 27 ___ 1943 ___ 19 ___ Dec 7 to 25 _________t30 ___ 1910 ___ 28 (.11") __ June 19 to July 16 (9) t 27 ___ 1949 ___ 19 ___ May 30 to Jun 17 ___ t30 ___ 1941 ___ 28 (.00") __ Sep 5 to Oct 2 (28) t 27 ___ 1976 ___ 19 ___ Apr 3 to 21 __________t30 ___ 1964 ___ 28 (.11") __ Oct 22 to Nov 18 (14,10) t 27 ___ 1978 ___ 19 ___ Oct 28 to Nov 15 ____t30 ___ 1976 ___ 28 (.02") __ Nov 1 to 28 (9, 18) t 27 ___ 2007 ___ 19 ___ Aug 22 to Sep 9 ____t30 ___ 2003 ___28 (.14") __ Jan 7 to Feb 3 (8) t 35 ___ 1894 ___ 18 ___ Aug 21 to Sep 7 _____t35 ___ 1908 ___ 27 (.09") __ June 17 to July 13 (9,9) t 35 ___ 1903 ___ 18 ___ Apr 16 to May 3 _____t35 ___ 1955 ___ 27 (.05") __ July 11 to Aug 6 (13, 10) t 35 ___ 1976 ___ 18 ___ Nov 11 to 28 ________ t35 ___ 1980 ___ 27 (.08") __ Jan 20 to Feb 15 (24) t 35 ___ 1977 ___ 18 ___ Apr 6 to 23 _________ t35 ___ 2005 ___ 27 (.09") __ July 18 to Aug 13 (11) t 35 ___ 1980 ___ 18 ___ June 11 to 28 _______ t39 ___ 1902 ___ 26 (.09") __ Oct 29 to Nov 22 (14, 9) t 35 ___ 2017 ___ 18 ___ Sep 20 to Oct 7 _____ t39 ___ 1915 ___ 26 (.02") __ Mar 8 to Apr 2 (15, 10) t 41 ___ 1875 ___ 17 ___ Aug 24 to Sep 9 _____ t39 ___ 1916 ___ 26 (.12") __ Aug 12 to Sep 6 (10) t 41 ___ 1880 ___ 17 ___ May 1 to 17 __________t39 ___ 1931 ___ 26 (.08") __ Nov 1 to 26 (13) t 41 ___ 1887 ___ 17 ___ May 8 to 24 _________ t39 ___ 1939 ___ 26 (.00") __ Nov 6 to Dec 1 (26) t 41 ___ 1908 ___ 17 ___ Nov 19 to Dec 5 _____t39 ___ 1950 ___ 26 (.09") __ Sep 14 to Oct 9 (16) t 41 ___ 1939 ___ 17 ___ Oct 4 to 20 _________ t45 ___ 1900 ___ 25 (.06") __ Dec 5 to 29 (16) t 41 ___ 1945 ___ 17 ___ Aug 7 to 23 _________ t45 ___ 1914 ___ 25 (.03") __ Aug 30 to Sep 23 (15) t 41 ___ 1946 ___ 17 ___ Sep 4 to 20 _________ t45 ___ 1942 ___ 25 (.00") __ Apr 11 to May 5 (25) t 41 ___ 1948 ___ 17 ___ Aug 23 to Sep 8 _____ t45 ___ 1981 ___ 25 (.09") __ Jan 8 to Feb 1 (15) t 41 ___ 1945 ___ 17 ___ Aug 7 to 23 __________t45 ___ 2004 ___ 25 (.11") __ Feb 8 to Mar 3 (13) t 41 ___ 1961 ___ 17 ___ Aug 28 to Sep 13 ____ t 45 ___ 2005 ___ 25 (.08") __ Aug 20 to Sep 13 (13) t 41 ___ 1986 ___ 17 ___ Feb 22 to Mar 10 ____ t51 ___ 1869 ___ 24 (.06") __ Oct 24 to Nov 16 (11) t 41 ___ 1999 ___ 17 ___ Nov 3 to 19 __________ t51 ___ 1874 ___ 24 (.02") __ Aug 23 to Sep 15 (12,11) t 41 ___ 2001 ___ 17 ___ Oct 17 to Nov 2 ______ t51 ___ 1904 ___ 24 (.06") __ Aug 21 to Sep 13 (21) t 41 ___ 2010 ___ 17 ___ Aug 26 to Sep 11 _____t51 ___1909 ___ 24 (.06") __ June 29 to July 22 (8) t 55 ___ 1877 ___ 16 ___ Sep 18 to Oct 3 ______t51 ___ 1922 ___ 24 (.00") __ Sep 13 to Oct 6 (24) t 55 ___ 1881 ___ 16 ___ July 14 to 29 _________t51 ___ 1959 ___ 24 (.04") __ Sep 4 to 27 (16) t 55 ___ 1895 ___ 16 ___ June 7 to 22 _________t51 ___ 1968 ___ 24 (.07") __ Sep 12 to Oct 5 (12) t 55 ___ 1900 ___ 16 ___ Dec 12 to 27 _________t51 ___ 1972 ___ 24 (.12") __ July 22 to Aug 14 (11) t 55 ___ 1901 ___ 16 ___ Oct 20 to Nov 4 ______t51 ___ 2013 ___ 24 (.11") __ Oct 8 to 31 (11) t 55 ___ 1902 ___ 16 ___ Apr 10 to 25 _________ t51___ 2015 ___ 24 (.05") __ Apr 22 to May 15 (23) t 55 ___ 1923 ___ 16 ___ Sep 24 to Oct 9 _____ t61 ___ 1872 ___ 23 (.10") __ Feb 15 to Mar 8 (10) t 55 ___ 1950 ___ 16 ___ Sep 23 to Oct 8 _____ t61 ___ 1885 ___ 23 (.07") __ Sep 10 to Oct 2 (12) t 55 ___ 1959 ___ 16 ___ Sep 12 to 27 ________ t61 ___ 1894 ___ 23 (.08") __ Aug 16 to Sep 7 (18) t 55 ___ 1964 ___ 16 ___ May 16 to 31 ________ t61 ___ 1896 ___ 23 (.11") __ Jan 1 to 23 (9) t 55 ___ 1967 ___ 16 ___ May 30 to June 14 ___t61 ___ 1964 ___ 23 (.09") __ Aug 19 to Sep 10 (12) t 55 ___ 1970 ___ 16 ___ Feb 16 to Mar 3 ______t61 ___ 1991 ___ 23 (.00") __ Oct 18 to Nov 9 (23) t 55 ___ 1987 ___ 16 ___ Aug 11 to 26 _________t61 ___ 1999 ___ 23 (.08") May 25 to June 16 (20) t 55 ___ 1988 ___ 16 ___ Aug 1 to 16 __________t68 ___ 1870 ___ 22 (.03") __ Aug 26 to Sep 16 (21) t 55 ___ 2020 ___ 16 ___ Sep 11 to 26 ________ t68 ___ 1899 ___ 22 (.10") __ Nov 20 to Dec 11 (11) t 70 ___ 1876 ___ 15 ___ June 25 to July 9 ____ t68 ___ 1917 ___ 22 (.01") __ Oct 31 to Nov 21 (21) t 70 ___ 1876 ___ 15 ___ Aug 18 to Sep 1 ______t68 ___ 1968 __ 22 (.08") Apr 2 to 23 (13) t 70 ___ 1886 ___ 15 ___ June 25 to July 9 ____t68 ___ 1973 ___ 22 (.11") __ Nov 2 to 23 (14) t 70 ___ 1895 ___ 15 ___ Oct 16 to 30 _________t68 ___ 1981 ___ 22 (.11") Aug 17 to Sep 7 (14) t 70 ___ 1899 ___ 15 ___ Apr 18 to May 1 ______t68 ___ 1988 ___ 22 (.00") __ Nov 29 to Dec 20 (22) t 70 ___ 1899 ___ 15 ___ May 30 to June 13 ___ t68 ___ 1999 ___ 22 (.10") __ Nov 3 to 24 (17) t 70 ___ 1903 ___ 15 ___ May 23 to June 6 ____t76 ___ 1877 ___ 21 (.06") __ Feb 3 to 23 (15) t 70 ___ 1908 ___ 15 ___ May 31 to June 14 ____t76 ___ 1895 ___ 21 (.00") __ Feb 9 to Mar 1 (21) t 70 ___ 1908 ___ 15 ___ Oct 11 to 25 __________t76 ___ 1904 ___ 21 (.05") __ Nov 14 to Dec 4 (12) t 70 ___ 1909 ___ 15 ___ Aug 21 to Sep 4 ______t76 ___ 1908 ___ 21 (.00") __ Sept 7 to 27 (21) t 70 ___ 1912 ___ 15 ___ June 26 to July 10 ____t76 ___ 1908 ___ 21 (.10") __ Nov 16 to Dec 6 (17) t 70 ___ 1913 ___ 15 ___ May 1 to 15 ___________t76 ___ 1923 ___ 21 (.04") __ Sep 24 to Oct 14 (16) t 70 ___ 1914 ___ 15 ___ Sep 9 to 23 ___________t76 ___ 1935 ___ 21 (.05") __ May 8 to 28 (14) t 70 ___ 1915 ___ 15 ___ Mar 8 to 22 ___________t76 ___ 1940 ___ 21 (.09") __ Oct 9 to 29 (13) t 70 ___ 1925 ___ 15 ___ Aug 22 to Sep 5 ______t76 ___ 1962 ___ 21 (.00") __ June 27 to July 17 (21) t 70 ___ 1930 ___ 15 ___ July 30 to Aug 13 _____t76 ___ 2000 ___ 21 (.01") __ Oct 19 to Nov 8 (10, 10) t 70 ___ 1932 ___ 15 ___ July 5 to 19 ___________t76 ___ 2006 ___ 21 (.05") __ Mar 13 to Apr 2 (11) t 70 ___ 1953 ___ 15 ___ Aug 18 to Sep 1 _______t76 ___ 2010 ___ 21 (.11") __ May 19 to June 8 (9) t 70 ___ 1964 ___ 15 ___ June 22 to July 7 _____ t76 ___ 2012 ___ 21 (.10") __ Mar 4 to 24 (7) t 70 ___ 1968 ___ 15 ___ July 4 to 18 ___________ t89 ___ 1879 ___ 20 (.02") __ Sep 29 to Oct 18 (13) t 70 ___ 1974 ___ 15 ___ Sep 30 to Oct 14 ______ t89 ___ 1886 ___ 20 (.07") __ Feb 27 to Mar 18 (13) t 70 ___ 1978 ___ 15 ___ Aug 13 to 27 __________ t89 ___ 1887 ___ 20 (.01") __ May 8 to 27 (17) t 70 ___ 1979 ___ 15 ___ Oct 13 to 27 ___________t89 ___ 1892 ___ 20 (.05") __ Sep 15 to Oct 4 (12) t 70 ___ 1980 ___ 15 ___ Aug 16 to 30 __________ t89 ___ 1897 ___ 20 (.02") __ Sep 3 to 22 (10) t 70 ___ 1981 ___ 15 ___ Jan 17 to 31 ___________ t89 ___ 1901 ___ 20 (.10") __ Feb 10 to Mar 1 (8) t 70 ___ 2001 ___ 15 ___ Nov 5 to 19 ____________t89 ___ 1910 ___ 20 (.09") __ Nov 5 to 24 (7) t 70 ___ 2015 ___ 15 ___ Sep 14 to 28 ___________t89 ___ 1914 ___ 20 (.06") __ Sep 26 to Oct 15 (19) t 70 ___ 2020 ___ 15 ___ June 12 to 26 _________ t89 ___ 1944 ___ 20 (.00") __ Aug 23 to Sep 11 (20) t 98 ___ all at 14 days _________________________ t89 ___ 1963 ___ 20 (.10") __ Mar 27 to Apr 15 (7) _______________________________________________ t89 ___ 1968 ___ 20 (.04") __ June 29 to July 18 (15) _______________________________________________ t89 ___ 1971 ___ 20 (.09") __ Apr 8 to 27 (13) _______________________________________________ t89 ___ 1976 ___ 20 (.03") __ Apr 2 to 21 (19) _______________________________________________ t89 ___ 1978 ___ 20 (.05") __ Oct 28 to Nov 16 (19) _______________________________________________ t89 ___1985-86_ 20 (.07") __ Dec 14 to Jan 2 (6) _______________________________________________ t89 ___ 1986 ___ 20 (.08") __ Mar 16 to Apr 4 (7, 7) _______________________________________________ t89 ___ 2010 ___ 20 (.03") __ June 23 to July 12 (10) _______________________________________________ t89 ___ 2020 ___ 20 (.05") __ June 7 to 26 (15) __________________________________________________________________ Most of the EDS entries, if not extensions of the first list of absolute dry spells, contain 9-15 day ADS intervals, and a few entries such as the last one add no days at either end of a long ADS, so the EDS is the original ADS. A few EDS have two ADS in their duration, for example 24d EDS in 1874 had 12d and 11d ADS separated by .02" 21 days from Oct 19 to Nov 8 2000 had only .01" (on Oct 29, dividing this into two ten-day dry spells). Two long dry spells in Sep-Oct 1914 were separated by only .28" in two days, and narrowly missed combining for an eligible 49-day EDS. The average year has 6.4 EDS which include 3.6 ADS. The average EDS is 15 days long. Those associated with an ADS are on average about 14 days long. As the amount of precipitation varies from nil to .10" per 20 days, the total precipitation in all these dry spells is probably around 50" (two fairly dry years, but the total length of these dry spells is about 40 years). The average year has 88.7 days within the various dry spells, the range is 18 (2014) to 159 (1909). 1945 and 2014 had the fewest days in qualifying dry years, however, they were not overly wet years, their cycle of wet and dry seemed to be closer to 7-8 days. Considering how much rain fell in 1983, the year managed an almost average output of dry spells, mainly in February and the late autumn. This is a frequency distribution of the months involved in the 97 longest absolute dry spells (15 or more days), frequency assigned by nearest 0.1 portions when the dry spell overlaps two months. JAN _ FEB _ MAR _ APR _ MAY _ JUN _ JUL _ AUG _ SEP _ OCT _ NOV _ DEC 1.3 ___ 3.8 __ 1.9 ___ 6.3 __ 7.0 __ 9.3 __ 6.5 ___15.9 __19.2 __ 13.9 __ 7.8 __ 4.1 This frequency distribution shows that late summer into autumn is favored for long dry spells, winter and early spring least favored, with a slight secondary peak around late May through June. About half of the dry spell frequency is in the period August to October. The following is a graph of the number of days each year (1869-2020) within qualifying dry spells. There are peaks around the 1880s, 1900s, 1960s and (early) 1980s. Peak years from graph: _______ 1885 ____ 1909 ____________ 1965 __ 1980 __ (2010)
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Okay, I wasn't aware that your list had any values that were different from 24 hour calendar day, so take my list with that caveat, for example the last three entries of 1938 are the total rainfall from the frontal system and Long Island Express hurricane on three consecutive days. My method is going to inflate the number of events like that, but at the same time it will miss two consecutive days that reached 1.0" without either of them being that high. As most of the events are just one-day rainfalls with nothing much on either side of them, I would say it at least gives an indication of how past years compare. 1949 looks like a very dry year. I have blocked out zero-rainfall and low-rainfall periods in my file and will post a list of the longest dry spells some time, the other side of the coin.
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I only listed them by daily totals, there may be others that reach 1.0" by 24 consecutive hours.
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Hey Uncle W, I took your format and found the data for 1869 to 1949 to complete the available years ... here's what I found. YR _ TOT __ n __ events 1869 _ 45.3" _ 11 __ 1.6, 2.6, 1.1, 1.2, 1.5, 1.4, 1.8, 2.1, 1.3, 1.0, 1.1 1870 _ 39.3" _ 11 __ 1.2, 1.3, 1.1, 1.1, 1.0, 1.6, 1.2, 1.6, 1.9, 1.4, 1.1 1871 _ 51.4" _ 14 __ 2.0, 1.0, 1.3, 1.9, 2.3, 1.5, 1.1, 1.0, 1.0, 1.1, 2.7, 2.4, 1.3, 1.1 1872 _ 44.0" _14 __ 1.1, 2.3, 1.3, 1.3, 1.0, 1.2, 1.6, 1.1, 2.9, 1.3, 1.9, 1.6, 1.6, 1.4 1873 _ 48.0" _ 10 __ 1.4, 1.2, 1.3, 1.2, 1.6, 1.3, 1.4, 1.7, 4.8, 2.0 1874 _ 45.8" _ 11 __ 3.1, 1.2, 1.9, 1.4, 1.9, 1.1, 3.3, 3.0, 1.0, 1.2, 1.9 1875 _ 40.7" __ 7 __ 1.8, 1.5, 1.0, 2.6, 2.0, 1,4, 1.3 1876 _ 41.8" _ 11 __ 1.0, 1.9, 4.3, 1.7, 1.2, 1.4, 1.6, 2.1, 3.4, 1.5, 1.3 1877 _ 40.2" __ 5 __ 1.4, 1.3, 2.9, 4.1, 1.9 1878 _ 48.7" _ 14 __ 1.1, 2.4, 1.2, 1.2, 1.6, 2.9, 3.3, 1.1, 2.5, 2.0, 1.7, 1.0, 1.6, 1.4 1879 _ 39.0" _ 10 __ 1.2, 1.1, 1.2, 1.3, 1.3, 1.0, 1.0, 4.0, 1.0, 1.1 1880 _ 36.6" __ 8 __ 1.1, 1.4, 1.7, 1.4, 1.9, 1.1, 1.2, 1.2 1881 _ 36.3" __ 6 __ 1.7, 1.3, 1.5, 2.2, 1.3, 2.1 1882 _ 45.3" __ 6 __ 1.1, 1.4, 2.6, 1.2, 2.3, 8.3 1883 _ 35.8" __ 5 __ 1.3, 1.9, 1.0, 1.3, 1.1 1884 _ 52.3" _ 17 __ 1.1, 1.2, 1.1, 1.1, 1.3, 4.3, 1.1, 1.6, 1.4, 1.8, 1.1, 1.2, 1.0, 1.1, 1.6, 1.3, 1.9 1885 _ 35.4" _ 10 __ 1.7, 1.4, 1.2, 2.4, 1.5, 1.1, 1.3, 1.1, 1.2, 1.2 1886 _ 39.4" __ 8 __ 1.0, 2.7, 2.5, 2.3, 1.5, 1.2, 1.6, 1.1 1887 _ 44.0" _ 11 __ 1.0, 1.5, 1.8, 1.3, 2.6, 2.0, 1.8, 1.7, 1.6, 1.1, 1.2 1888 _ 53.3" _ 19 __ 2.1, 1.1, 1.6, 1.5, 1.1, 1.1, 1.1, 1.6, 1.2, 1.0, 2.2, 4.2, 1.7, 1.1, 1.3, 2.1, 1.4, 1.2, 2.3 1889 _ 58.2" _ 17 __ 1.4, 1.2, 1.0, 1.9, 1.5, 1.0, 2.0, 2.7, 1.7, 2.3, 1.7, 1.1, 1.9, 1.5, 3.7, 1.1, 2.2 1890 _ 45.6" _ 10 __ 1.3, 1.1, 1.5, 1.0, 1.4, 1.2, 1.6, 1.6, 1.4, 1.9 1891 _ 39.4" __ 5 __ 1.3, 1.3, 1.3, 1.9, 1.4 1892 _ 35.6" __ 6 __ 1.0, 1.4, 1.2, 1.6, 1.3, 2.4 1893 _ 48.3" _ 15 __ 1.3, 1.6, 1.4, 1.7, 1.1, 2.0, 1.1, 2.0, 1.1, 1.3, 2.5, 3.6, 2.5, 1.4, 1.2 1894 _ 40.4" __ 9 __ 1.3, 4.3, 1.7, 1.7, 1.1, 1.6, 1.1, 1.5, 1.3 1895 _ 35.4" _ 12 __ 2.0, 1.6, 1.1, 1.2, 1.1, 1.1, 1.7, 1.1, 1.2, 1.1, 1.2, 1.1 1896 _ 42.0" _ 11 __ 2.7, 2.3, 1.1, 2.4, 1.2, 2.0, 1.2, 1.1, 1.4, 1.0, 1.2 1897 _ 44.6" _ 13 __ 1.5, 1.1, 1.3, 1.3, 1.9, 2.3, 1.2, 2.2, 2.3, 1.0, 1.2, 1.1, 2.2 1898 _ 47.9" _ 11 __ 1.0, 3.1, 1.4, 1.4, 1.1, 1.1, 2.2, 1.2, 1.1, 1.3, 1.0, 1899 _ 38.6" _ 10 __ 1.4, 1.6, 1.0, 1.3, 1.4, 1.8, 2.3, 2.1, 1.1, 1.0 1900 _ 41.2" _ 14 __ 1.5, 1.2, 1.2, 1.3, 2.0, 1.0, 1.2, 1.3, 1.3, 1.1, 1.4, 1.1, 1.9, 1.4 1901 _ 48.7" _ 16 __ 2.9, 1.2, 1.4, 1.8, 1.2, 1.3, 1.4, 3.1, 1.3, 1.1, 1.4, 2.5, 1.2, 1.1, 1.2, 2.5 1902 _ 52.8" _ 14 __ 1.9, 1.1, 1.3, 1.7, 1.6, 3.1, 2.3, 1.3, 1.2, 1.6, 1.6, 2.0, 2.0, 1.4 1903 _ 58.5" _ 13 __ 1.3, 1.1, 1.0, 2.2, 2.6, 1.2, 2.0, 1.4, 1.2, 1.6, 4.3, 7.3, 1.3 1904 _ 41.6" __ 8 __ 1.5, 1.1, 1.2, 3.6, 2.0, 1.9, 1.4, 1.3 1905 _ 37.4" _ 13 __ 1.3, 1.1, 1.1, 1.2, 1.1, 1.2, 1.2, 2.5, 1.7, 1.1, 1.3, 1.0, 1.4 1906 _ 40.2" _ 12 __ 2.3, 1.1, 1.1, 2.3, 1.8, 1.1, 2.6, 1.2, 1.1, 1.1, 1.8, 1.3 1907 _ 46.7" _ 12 __ 1.2, 1.5, 1.2, 2.3, 2.1, 2.1, 1.1, 1.7, 1.4, 1.3, 1.3, 1.4 1908 _ 41.1" _ 12 __ 1.3, 1.5, 1.3, 2.2, 3.8, 1.2, 1.9, 1.5, 1.1, 1.3, 3.2, 2.0 1909 _ 41.7" __ 8 __ 1.5, 1.4, 2.1, 2.7, 1.8, 2.4, 4.8, 3.0 1910 _ 33.7" _ 10 __ 1.2, 1.2, 1.4, 1.2, 2.2, 1.1, 1.2, 2.5, 2.6, 1.1 1911 _ 48.8" _ 12 __ 1.8, 1.3, 1.0, 1.1, 1.5, 1.7, 3.8, 1.3, 2.5, 1.3, 1.5, 1.2 1912 _ 45.6" _ 13 __ 1.4, 1.8, 1.8, 1.4, 1.3, 1.0, 1.2, 1.0, 1.0, 3.0*, 2.3, 1.1, 1.7 1913 _ 58.0" _ 20 __ 1.2, 1.0, 1.9, 1.4, 1.1, 1.1, 1.3, 1.3, 1.0, 1.3, 1.2, 3.1, 1.0, 3.5, 5.0, 1.1, 1.1, 3.3, 1.2, 1.6 1914 _ 40.1" _ 11 __ 1.1, 1.5, 1.6, 3.0*, 1.8, 1.1, 1.9, 1.7, 1.1, 1.8, 1.2 1915 _ 45.7" _ 14 __ 2.4, 1.1, 1.1, 2.1, 1.5, 1.1, 1.1, 1.1, 1.9, 1.2, 3.3, 1.5, 1.7, 1.1 1916 _ 37.9" __ 7 __ 2.1, 1.4, 2.7, 1.5, 1.1, 1.1, 1.1 1917 _ 41.0" __ 8 __ 1.1, 1.1, 2.5, 1.5, 2.5, 1.6, 1.2, 1.5 1918 _ 38.3" _ 11 __ 1.0, 1.2, 1.8, 1.9, 2.0, 1.2, 2.0, 1.0, 1.3, 1.0, 1.3 1919 _ 53.3" _ 14 __ 1.2, 1.2, 1.1, 1.3, 1.8, 1.6, 1.1, 1.4, 2.0, 1.8, 1.4, 1.2, 1.7, 2.7 1920 _ 53.2" _ 17 __ 1.7, 1.3, 1.4, 1.8, 1.1, 1.3, 1.3, 1.0, 1.8, 2.0, 1.5, 1.1, 2.2, 1.3, 1.7, 1.1, 1.2 1921 _ 37.8" __ 7 __ 1.8, 2.7, 1.2, 1.1, 1.0, 2.2, 1.3 1922 _ 44.7" _ 11 __ 1.4, 1.1, 1.2, 1.0, 1.5, 2.1, 1.2, 1.5, 1.3, 1.8, 1.3 1923 _ 40.6" __ 7 __ 1.7, 1.1, 1.5, 2.5, 1.5, 1.8, 1.1 1924 _ 41.7" _ 17 __ 1.1, 1.4, 1.3, 2.2, 1.0, 1.3, 1.4, 2.2, 1.0, 1.3, 1.1, 1.0, 2.2, 2.3, 1.4, 1.9, 1.2 1925 _ 41.4" __ 7 __ 1.9, 1.5, 1.5, 1.2, 2.1, 1.1, 1.6 1926 _ 47.8" _ 11 __ 1.7, 1.2, 1.4, 1.6, 3.3, 1.1, 1.4, 2.2, 1.2, 1.0, 1.4 1927 _ 56.1" _ 18 __ 1.1, 1.0, 1.4, 1.1, 1.7, 1.1, 1.7, 2.0, 2.6, 1.6, 1.0, 3.8, 1.1, 2.0, 1.9, 1.8, 1.4, 1.1 1928 _ 45.6" _ 16 __ 1.0, 1.4, 1.0, 1.2, 1.0, 1.0, 1.0, 1.2, 1.0, 1.2, 1.7, 1.1, 1.3, 1.2, 1.3, 1.1 1929 _ 40.4" __ 7 __ 1.7, 1.9, 1.6, 1.1, 2.2, 1.4, 1.1 1930 _ 39.0" __ 8 __ 1.2, 1.1, 2.8, 1.4, 3.0, 1.1, 1.9, 1.4 1931 _ 36.1" __ 5 __ 1.6, 1.3, 1.6, 1.0, 1.5 1932 _ 43.9" _ 13 __ 1.3, 1.3, 2.4, 1.1, 2.1, 1.3, 1.4, 1.2, 2.1, 1.2, 1.7, 1.3, 2.0 1933 _ 53.5" _ 10 __ 1.5, 2.1, 2.2, 2.2, 1.1, 2.2, 1.6, 2.8, 4.2, 1.0 1934 _ 49.8" _ 13 __ 1.1, 2.2, 1.6, 1.1, 1.2, 1.9, 1.6, 1.2, 4.9, 1.4, 1.5, 1.7, 1.2 1935 _ 33.9" __ 7 __ 1.1, 1.5, 1.0, 1.1, 1.2, 1.6, 1.2 1936 _ 49.8" _ 15 __ 1.4, 1.4, 2.4, 1.5, 1.4, 1.3, 1.6, 1.5, 1.6, 1.0, 3.9, 1.0, 2.3, 1.5, 1.4 1937 _ 53.0" _ 15 __ 1.1, 1.2, 1.0, 1.2, 1.1, 1.4, 1.2, 2.7, 1.1, 2.2, 1.5, 1.3, 1.3, 3.1, 2.1 1938 _ 48.5" __ 9 __ 1.4, 1.4, 1.1, 1.7, 2.4, 1.5, 1.8, 1.7, 4.1 1939 _ 38.6" _ 12 __ 1.0, 1.2, 1.5, 1.6, 1.2, 1.3, 1.0, 1.9, 2.3, 1.1, 1.4, 1.4 1940 _ 45.1" _ 10 __ 2.1, 1.9, 1.1, 1.5, 3.1, 1.9, 1.5, 2.4, 1.3, 1.2 1941 _ 39.0" _ 10 __ 1.2, 3.0*, 1.8, 1.1, 1.1, 1.7, 1.8, 2.3, 1.6, 3.0* 1942 _ 48.5" _ 14 __ 1.1, 1.0, 1.6, 1.4, 1.5, 1.1, 1.3, 1.1, 4.1, 1.0, 1.6, 1.3, 1.2, 1.2 1943 _ 36.7" __ 9 __ 1.3, 1.9, 1.8, 1.0, 1.5, 1.2, 1.7, 3.4, 1.1 1944 _ 45.0" __ 9 __ 1.4, 1.9, 1.7, 1.2, 1.6, 3.9, 3.8, 1.3, 1.7 1945 _ 45.0" _ 10 __ 1.7, 1.3, 1.2, 1.3, 1.1, 1.3, 3.1, 1.1, 1.3, 1.1 1946 _ 38.4" _ 13 __ 1.2, 1.1, 1.7, 1.3, 2.1, 2.2, 1.2, 2.1, 2.7, 1.1, 1.2, 1.3, 1.3 1947 _ 40.8" __ 8 __ 1.0, 1.1, 2.0, 1.3, 1.5, 1.8, 1.6, 2.4 1948 _ 46.9" _ 11 __ 1.2, 1.0, 1.6, 1.0, 2.5, 1.4, 1.3, 1.6, 1.5, 1.5, 1.4 1949 _ 36.2" __ 5 __ 1.2, 1.2, 1.1, 1.3, 1.1 _______________________________________________ 3.0* _ these amounts were rounded upwards from 2.95 to 2.99 values.
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Historic Pacific Northwest Heatwave of 2021
Roger Smith replied to donsutherland1's topic in Climate Change
Well technically our heat wave and dry spell ended yesterday with a few rather weak thundershowers and generally cloudy skies, holding our maximum down to the mid 20s C (24.2 at Warfield) and dropping a small amount of rain, about 3-5 mm at my location and just 0.8 mm at Warfield. But there has not been any real change in air mass so with sunny skies again today it feels like it's heading back to the low or mid 30s. There were numerous lightning strikes around the region but possibly heavier rainfalls near the core of these storms which tracked by to our north and south on several occasions. So there are no reports of new fire starts locally. Larger fires continue to rage in central BC however.- 323 replies
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Historic Pacific Northwest Heatwave of 2021
Roger Smith replied to donsutherland1's topic in Climate Change
Here's the record of daily highs at Warfield BC near my location. Warfield is a small town outside Trail BC, and the urban influence would be minor at most. It is also a few hundred feet above the Columbia River where Trail is located, so Trail likely had readings about 1 F or 0.5 C higher than these. I guess I was cooler by the same amount, not that it was all that obvious. For reference the normal late June and early July mean maximum temperatures in this location would be in the range of 28-29 C (83-84 F). I started the log from June 18 which was the first day after a mid-month relatively cool spell that broke 28 C. There were also three very hot days at the start of June (average 36 C). There has been zero rainfall in this now 19 day hot spell. In fact the last rainfall was 17 mm on June 15th. So today is the 21st consecutive dry day. This would not be all that unusual in late July or early August around here, but is quite unusual for this part of the summer season. I will post further data in this table until the heat wave ends. Today's values are estimates from hourlies so far. It is scorching hot and sunny again. Date ____ Max __ Min Jun 18 __ 30.6 __ 9.5 Jun 19 __ 29.1 __ 11.3 Jun 20 __ 29.7 __ 14.4 Jun 21 __ 33.4 __ 11.3 Jun 22 __ 35.3 __ 13.4 Jun 23 __ 34.2 __ 15.2 Jun 24 __ 32.4 __ 19.0 Jun 25 __ 35.7 __ 14.3 Jun 26 __ 39.6 __ 19.0 Jun 27 __ 42.3 __ 18.2 Jun 28 __ 42.5 __ 19.3 Jun 29 __ 43.9 __ 21.9 Jun 30 __ 44.8 __ 22.3 July 1 ___ 40.0 __ 20.7 July 2 ___ 37.2 __ 20.0 July 3 ___ 38.1 __ 19.0 July 4 ___ 37.2 __ 17.6 July 5 ___ 35.8 __ 17.3 July 6 ___ 37.1 __ 18.2 19 day avg 36.8 (98.2 F) 11 day avg 38.6 (101.5 F) morning of July 7 overcast with spits of rain, trace amount so far. this may be the end of the heat wave unless it clears up later. __________________________________________________ If you read my tables of hottest NYC weeks, I would estimate that this location had probably seen values comparable to the top five in that once or twice in the past, perhaps up to around 100 F, but the value for average maximum June 26 to July 2 was 106.7 F which is about 8 deg (F) higher than any comparable period at NYC, and 0.7 higher than the all-time (one-day) high for NYC in July 1936. The saving grace is that we saw low humidity through the heat wave and overnight lows while balmy for this climate were tolerable enough.- 323 replies
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Yes, here we go with the next instalment of extreme weeks, 1993 shows up alright. The 1936 heat wave is famous but for whatever reason NYC only got into the extreme heat on one day (9th 106F the all-time record). In Toronto the week from July 8 to 14 ranks warmest on record, for NYC it ranks only t-20th. So it does not show up in this list of extremes, the mean max of 94.86 was about three degrees lower than the relevant weekly extreme. (edit September 17th, 2021 _ the thread has been redesigned since weekly posts of July and August extremes, and those have been replaced with monthly summaries. The material that used to be in this post is now several posts ahead in the July portion of the tables.
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Historic Pacific Northwest Heatwave of 2021
Roger Smith replied to donsutherland1's topic in Climate Change
By the way it was the fourth warmest June on record at Toronto (downtown) at 21.4 C but short of 2005 (22.8) 1919 (22.5), 1949 (22.4) and even before urban heat island adjustments which would have moved 1919 about 0.4 lower, 1949 0.7 and the other two 1.1 C lower. June 1991 was 0.1 cooler in fifth place. The differentials were such that 2021 also took fourth place after adjustments, most of the 5-10 ranked Junes are fairly recent so none of them had much of an advantage to use by these adjustments. Report from the heat zone -- around Friday it began to moderate slightly each day but has remained very warm indeed for this climate, 35 C highs on the weekend. Somewhat cooler air pushed in just to our north so we went up that way and spent most of the weekend enjoying 28 C and scattered thunderstorms. As of time of writing it has not rained here at all but we have some activity moving in from the west on the radar, expecting a bit of thunder and maybe 0.25" rainfall. Fires not too big a problem locally, there was a stubborn one that while not very aggressive was hard to put out, west of Castlegar (on the outskirts of town) but it hasn't burned very far down the hill yet so no evacuations in the town, just on one outlying street near the fire. Otherwise in our drive around the region we could see smoke rising on the west side of the south arm of Kootenay Lake in an uninhabited area that is perhaps logged a little, from our perspective could not see much sign of clear cuts on the slopes. That was about ten miles west of the highway which runs up the east side of that lake. Not expecting much change in this current air mass which has become a bit more humid so the cooling does not feel like that much since the super heat was dry (dew points have come up from around 10 C to around 16 C). About 90% cloud cover today and 31 C. This is probably the coolest day here since June 20th. So we've now had a solid two weeks of either heat or extreme heat. Considering that our climate is statistically no warmer in summer than the east coast or the mid-Atlantic states, two weeks average of 98 to 100 F is quite something.- 323 replies
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This post originally started the July weekly summaries, but as the tables have now been reorganized into monthly summaries, this post will now contain the weeks that end in January. There were several posts after this one where members were commenting on the topic, so if you are looking for the weeks ending in February, you would need to scroll down several posts. After that, the rest of the year proceeds without very many other posts. For weeks ending on every day of the year, these tables give the extreme values of mean maximum, mean minimum, and mean daily temperatures. There are often second (and occasionally third) entries in smaller type, to show either years that never made it to the table values in nearby intervals, or how some of the contenders that did have entries fared at either end of their run. You'll note that quite often, a year will have three to five consecutive entries which indicates a warm or cold spell lasting 9-11 days. Some go as long as seven to ten consecutive indicating a very prolonged spell lasting 13-16 days. REPORT ON WEEKLY EXTREMES for WEEKS ENDING IN JANUARY The first six posts include days from the previous year as shown. Intervals _______________ Highest values 1869-2021 __ Lowest values 1869-2021 Dec 26 - Jan 1 __________ (max) 53.14 _ 1936-37 ____ (max) 15.57 _ 1917-18 Dec 26 - Jan 1 ___________ (min) 42.43 _ 2023-24 _____ (min) 1.29 _ 1917-18 _ *41.57 _ 2022-23, 39.71_1940-41 Dec 26 - Jan 1 __________ (mean) 46.00 _ 2023-24* ___ (mean) 8.43 _ 1917-18 _ *45.21 _ 1982-83 _ the wettest week ending Jan 1 was 1901-1902 (4.02") Dec 27 - Jan 2 __________ (max) 55.00 _ 1984-85 ____ (max) 13.14 _ 1917-18 _ Dec 27 - Jan 2 ___________ (min) 42.29 _2022-23* ___ (min) -1.00 _ 1917-18 _ *40.29_ 2023-24, 39.43 _ 1906-07 Dec 27 - Jan 2 __________ (mean) 46.93 _2022-23* __ (mean) 6.07 _ 1917-18 _*46.50 _ 1984-85 45.57_2021-22 _ the wettest week ending Jan 2 was 1948-1949 (3.47") _ included 4.0" snow Dec 28 - Jan 3 __________ (max) 55.14 _ 1984-85* ____ (max) 11.86 _ 1917-18 _ *2022-23 _54.86 Dec 28 - Jan 3 ___________ (min) 44.86 _2022-23* ____ (min) -2.86 _ 1917-18 _ * 40.43 _1906-07, 40.14 1965-66 Dec 28 - Jan 3 __________ (mean) 49.86_2022-23* ___(mean) 4.50 _ 1917-18 (12.64 1880-81) _*46.57 _ 1984-85 _ the wettest week ending Jan 3 was 1922-1923 (3.84") _ included 11.0" snow Dec 29 - Jan 4 ___________ (max) 57.56 _2022-23 __ (max) 9.43 _1917-18 _ *52.71 _ 2004-05 Dec 29 - Jan 4 ___________ (min) 47.14 _2022-23*___(min) -4.43 _1917-18 _* 40.86 _ 1965-66, 2004-05, 40.71 1906-07 _ Dec 29 - Jan 4 __________ (mean) 52.36 _2022-23* _ (mean) 2.50 _1917-18 _* 46.79 _ 2004-05 note: all lowest values (1917-18) in this section are the lowest values for any interval. _ the wettest week ending Jan 4 was 1981-1982 (3.79") Dec 30 - Jan 5 ________ (max) 57.42 _2022-23* _ (max) 12.00 _ 1917-18 _ *53.43 _ 1992-93, 1999-2000 Dec 30 - Jan 5 _________ (min) 47.71 _2022-23* __ (min) -1.43 _ 1917-18 _ *41.43 _ 2004-05 Dec 30 - Jan 5 _______ (mean) 52.57 _2022-23* __ (mean) 5.28 _ 1917-18 _ *47.00 _ 2004-05 _ the wettest week ending Jan 5 was 1948-1949 (4.32") _ included 4.1" snow Dec 31 - Jan 6 ___________ (max) 56.14* _ 2006-07 ____ (max) 16.43 _ 1917-18 _ *55.56 _ 2022-2023 Dec 31 - Jan 6 ___________ (min) 46.71* _ 2022-23 ______ (min) 3.57 _ 1917-18 _*43.86 2006-07 Dec 31 - Jan 6 __________ (mean) 51.14* _ 2022-23 ____ (mean) 10.00 _ 1917-18 (16.29 1903-04) _*50.50 _2006-07 _ the wettest week ending Jan 6 was 1981-1982 (3.79") Jan 1 - Jan 7 ___________ (max) 57.43 _ 2007*_____ (max) 20.71 _ 1918 (22.00 2018) _ * 54.71 _ 1950 54.14 _2023 Jan 1 - Jan 7 ___________ (min) 45.43 _ 2007*______ (min) 8.43 _ 1918 (10.71 2018) _ * 44.86_2023 42.57 _ 1950 Jan 1 - Jan 7 __________ (mean) 51.43 _ 2007 ____ (mean) 15.07 _ 1918 (16.36 2018) _ * 49.50 _2023 48.64 _ 1950 _ the wettest week ending Jan 7 was 1874 (4.02") Jan 2 - Jan 8 ___________ (max) 58.00 _ 1998 _____ (max) 22.57 _ 1904 Jan 2 - Jan 8 ___________ (min) 44.43 _ 2007 ______ (min) 10.71 _ 1904 Jan 2 - Jan 8 __________ (mean) 50.93 _ 2007*____ (mean) 16.64 _ 1904 _ * 49.50_1998, 47.64_1907 _ the wettest week ending Jan 8 was 1874 (4.22") Jan 3 - Jan 9 ___________ (max) 59.71 _ 1998*_____ (max) 23.86 _ 1896 _ * 55.29 _ 1907 Jan 3 - Jan 9 ___________ (min) 43.57 _ 1998*______ (min) 10.14 _ 1896 _ * 43.43 _ 2007 Jan 3 - Jan 9 __________ (mean) 51.64 _ 1998 ____ (mean) 17.00 _ 1896 _ * 50.00 _ 2007 _ the wettest week ending Jan 9 was 1874 (3.84") Jan 4 - Jan 10 __________ (max) 58.14 _ 1998*_____ (max) 22.00 _ 1896 _ * 53.71 _ 1946 Jan 4 - Jan 10 __________ (min) 42.71 _ 1998*______ (min) 8.43 _ 1968 (9.57 1896) _ * 42.14 _ 2007 Jan 4 - Jan 10 _________ (mean) 50.43 _ 1998*____ (mean) 15.43 _ 1968 _ * 48.21 _ 2007, 47.64_1946 _ the wettest week ending Jan 10 was 1874 (3.92") Jan 5 - Jan 11 __________ (max) 56.43*_ 1998 _____ (max) 19.86 _ 1968 _ * 53.71 _ 1946 Jan 5 - Jan 11 __________ (min) 42.29 _ 1946*______ (min) 6.14 _ 1968 _ * 42.00_1998,2008 Jan 5 - Jan 11 _________ (mean) 49.21 _ 1998*____ (mean) 13.00 _ 1968 _ * 48.79_2008, 48.00_1946 _ the wettest week ending Jan 10 was 1874 (3.92") Jan 6 - Jan 12 __________ (max) 56.43 _ 2008 _____ (max) 19.71 _ 1968 Jan 6 - Jan 12 __________ (min) 43.43 _ 2008 ______ (min) 4.71 _ 1968 Jan 6 - Jan 12 _________ (mean) 49.93 _ 2008*____ (mean) 12.21 _ 1968 _ * 47.64_1946 _ the wettest week ending Jan 12 was 1874 (3.76") Jan 7 - Jan 13 __________ (max) 55.71 _ 2008 _____ (max) 19.71 _ 1886 (19.86 1968) Jan 7 - Jan 13 __________ (min) 43.43 _ 2008 ______ (min) 4.57 _ 1968 Jan 7 - Jan 13 _________ (mean) 49.57 _ 2008 ____ (mean) 12.21 _ 1968 (14.50 1886 16.36 1981) _ the wettest week ending Jan 13 was 1915 (4.35") _ included 0.7" snow Jan 8 - Jan 14 __________ (max) 53.57 _ 2006* _____ (max) 18.86 _ 1886 (22.57 1981) _ * 52.43 2008, 51.43 2020,2024 Jan 8 - Jan 14 __________ (min) 41.86 _ 2008 ______ (min) 7.14 _ 1968 (7.43 1912) Jan 8 - Jan 14 _________ (mean) 47.14 _ 2008 ____ (mean) 13.64 _ 1886 (14.43 1968, 16.29 1912) _ the wettest week ending Jan 14 was 1915 (3.41") _ included 0.7" snow Jan 9 - Jan 15 __________ (max) 53.86 _ 1932 _____ (max) 19.14 _ 1886 (21.43 1893, 23.14 1982) Jan 9 - Jan 15 __________ (min) 41.00 _ 1932 ______ (min) 8.14 _ 1886, 1912 Jan 9 - Jan 15 _________ (mean) 47.43 _ 1932 ____ (mean) 13.64 _ 1886 (15.71 1893, 16.36 1912) _ the wettest week ending Jan 15 was 1915 (3.46") _ included 0.7" snow Jan 10 - Jan 16 _________ (max) 55.29 _ 1932*_____ (max) 18.71 _ 1893 (20.00 1886) _ * 54.71 _ 2020 Jan 10 - Jan 16 _________ (min) 41.71 _ 1932*_______ (min) 6.57 _ 1912 (7.57 1893, 8.71 2004) _ * 39.57 _ 2020 Jan 10 - Jan 16 ________ (mean) 48.50 _ 1932* ____ (mean) 13.14 _ 1893 (13.64 1912) _ *47.14 _ 2020 _ the wettest week ending Jan 16 was 1915 (3.46") _ included 0.7" snow Jan 11 - Jan 17 _________ (max) 57.00 _ 1932 _____ (max) 17.00 _ 1893 Jan 11 - Jan 17 _________ (min) 42.71 _ 1932*______ (min) 7.29 _ 1912 (7.57 1893) _ * 42.57 _ 1995 Jan 11 - Jan 17 ________ (mean) 49.86 _ 1932 ____ (mean) 12.29 _ 1893 (14.57 1912) _ *47.71 _ 1995 _ the wettest week ending Jan 17 was 1915 (3.92") _ included 0.7" snow Jan 12 - Jan 18 _________ (max) 59.86 _ 1932*_____ (max) 18.43 _ 1893 _ * 54.57 _ 1995 Jan 12 - Jan 18 _________ (min) 44.14 _ 1932*______ (min) 8.00 _ 1893 _ * 44.00 _ 1995 Jan 12 - Jan 18 ________ (mean) 52.00 _ 1932*____ (mean) 13.21 _ 1893 (15.93 1977) _ * 49.29 _ 1995 _ the wettest week ending Jan 18 was 1915 (4.99") _ included 0.7" snow Jan 13 - Jan 19 _________ (max) 57.29 _ 1932*_____ (max) 19.71 _ 1893 _ *54.43 _ 1995 Jan 13 - Jan 19 _________ (min) 44.71 _ 1995*______ (min) 8.14 _ 1893 _ (9.86 1977) _ * 42.43 _ 1932 Jan 13 - Jan 19 ________ (mean) 50.86 _ 1932*____ (mean) 13.93 _ 1893 (16.14 1977, 16.79 1957) _ *49.57 _ 1995 _ the wettest week ending Jan 19 was 1936 (3.63") _ included 9.4" snow Jan 14 - Jan 20 _________ (max) 55.00 _ 1932 _____ (max) 20.57 _ 1893 Jan 14 - Jan 20 _________ (min) 44.57 _ 1995*______ (min) 6.29 _ 1994 (9.71 1920) _ * 41.43 _ 1932 Jan 14 - Jan 20 ________ (mean) 48.57 _ 1995*____ (mean) 14.71 _ 1893 (16.00 1994) _ * 48.21 _ 1932 _ the wettest week ending Jan 20 was 1978 (3.80") _ included 15.3" snow Jan 15 - Jan 21 _________ (max) 53.57 _ 1951*_____ (max) 21.86 _ 1893 (22.14 1875, 23.43 1994) _ *53.14_1913 Jan 15 - Jan 21 _________ (min) 42.86 _ 1995______ (min) 4.29 _ 1994 Jan 15 - Jan 21 ________ (mean) 46.43 _ 1995*____ (mean) 13.86 _ 1994 (15.57 1893, 16.07 1875) _ * 45.43 _ 1913 _ the wettest week ending Jan 21 was 1979 (4.18") _ included 1.8" snow Jan 16 - Jan 22 _________ (max) 54.86 _ 1973*_____ (max) 22.86 _ 1888 (23.00 1977) _ * 53.71 _ 1933 Jan 16 - Jan 22 _________ (min) 39.71 _ 1906 ______ (min) 5.43 _ 1994 (9.71 1977) Jan 16 - Jan 22 ________ (mean) 46.07 _ 1933*____ (mean) 15.29 _ 1994 _ * 45.43 _ 1973 _ the wettest week ending Jan 22 was 1979 (4.18") _ included 1.8" snow Jan 17 - Jan 23 _________ (max) 56.00 _ 1973*_____ (max) 23.14 _ 1888, 1977 _ * 54.57 _ 1933 Jan 17 - Jan 23 _________ (min) 41.29 _ 1906*______ (min) 7.57 _ 1994 _ * 39.29 _ 2017 Jan 17 - Jan 23 ________ (mean) 47.43 _ 1933*____ (mean) 16.29 _ 1888 _ * 46.36 _ 1973 _ the wettest week ending Jan 23 was 1979 (4.18") _ included 1.8" snow Jan 18 - Jan 24 _________ (max) 53.71 _ 1973*_____ (max) 21.14 _ 1888 _ * 53.14_1933, 52.43_1906 Jan 18 - Jan 24 _________ (min) 41.00 _ 1906*______ (min) 8.57 _ 1888 _ * 38.86 _ 2017 Jan 18 - Jan 24 ________ (mean) 46.71 _ 1906*____ (mean) 14.86 _ 1888 (17.07 2005) _ * 46.43 _ 1933 _ the wettest week ending Jan 24 was 1979 (6.16") _ included 0.5" snow Jan 19 - Jan 25 _________ (max) 51.86 _ 1933 _____ (max) 20.57 _ 1893 (23.00 1977) _ * 53.71 _ 1933 Jan 19 - Jan 25 _________ (min) 39.29 _ 1906*______ (min) 6.71 _ 1888 _ * 38.57 _ 2017 Jan 19 - Jan 25 ________ (mean) 45.50 _ 1933*____ (mean) 14.29 _ 1888 (16.14 1961) _ * 45.00 _ 1906 _ the wettest week ending Jan 25 was 1979 (6.31") _ included 0.5" snow Jan 20 - Jan 26 _________ (max) 55.00 _ 1967 _____ (max) 21.14 _ 1961 Jan 20 - Jan 26 _________ (min) 39.29 _ 1967*______ (min) 6.57 _ 1888 _ * 39.14 _ 2017 Jan 20 - Jan 26 ________ (mean) 47.14 _ 1967 ____ (mean) 15.21 _ 1888 (15.50 1961) _ the wettest week ending Jan 26 was 1979 (6.46") _ included 0.5" snow _ _ this was the highest weekly total for any week that included days in January. Jan 21 - Jan 27 _________ (max) 56.14 _ 1916*_____ (max) 21.29 _ 1961 _ * 55.86 _ 1967 Jan 21 - Jan 27 _________ (min) 41.57 _ 1967*______ (min) 5.14 _ 1888 _ * 40.43 _ 1916 Jan 21 - Jan 27 ________ (mean) 48.71 _ 1967*____ (mean) 13.79 _ 1888 (15.79 1961) _ * 48.29 _ 1916 _ the wettest week ending Jan 27 was 1979 (5.93") Jan 22 - Jan 28 _________ (max) 57.43 _ 1916*_____ (max) 21.29 _ 1961 _ * 55.14_1967, 52.43_1990 Jan 22 - Jan 28 _________ (min) 41.29 _ 1967*______ (min) 5.43 _ 1988 _ * 41.00_2002, 40.00_1916 Jan 22 - Jan 28 ________ (mean) 48.71 _ 1916*____ (mean) 13.50 _ 1893 (15.86 1871) _ * 48.21 _ 1967 _ the wettest week ending Jan 28 was 1986 (3.02") _ included 1.6" snow Jan 23 - Jan 29 _________ (max) 56.00 _ 2002*_____ (max) 21.86 _ 1936 (22.29 1961) _ * 53.71 _ 1933 Jan 23 - Jan 29 _________ (min) 42.86 _ 2002 ______ (min) 6.43 _ 1888 (7.29 1936) Jan 23 - Jan 29 ________ (mean) 49.43 _ 2002*____ (mean) 14.43 _ 1888 _ * 45.93 _ 1916 _ the wettest week ending Jan 29 was 1986 (3.04") _ included 2.0" snow Jan 24 - Jan 30 _________ (max) 57.86 _ 2002 _____ (max) 21.86 _ 1936 Jan 24 - Jan 30 _________ (min) 42.71 _ 2002 ______ (min) 6.57 _ 1935 (8.14 1888) _ * 41.43 _ 1932 Jan 24 - Jan 30 ________ (mean) 50.29 _ 2002*____ (mean) 15.00 _ 1936 (15.57 1888) _ * 45.00_1916, 44.93_1990 _ the wettest week ending Jan 30 was 1986 (3.06") _ included 2.2" snow Jan 25 - Jan 31 _________ (max) 56.71 _ 1947*_____ (max) 22.86 _ 1936 (23.14 1935) _ * 56.57_2002, 55.57_1916 Jan 25 - Jan 31 _________ (min) 41.43 _ 2002*______ (min) 6.14 _ 1935 _ * 39.43_1916, 38.86_1947 Jan 25 - Jan 31 ________ (mean) 49.00 _ 2002*____ (mean) 14.64 _ 1936 _ * 47.79_1947, 47.00_1916 _ the wettest week ending Jan 31 was 1986 (3.06") _ included 2.2" snow