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About RodneyS

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  • Four Letter Airport Code For Weather Obs (Such as KDCA)
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  • Location:
    Oak Hill, VA

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  1. Our region's extreme run

    Today made it to 82 at DCA and 80 at IAD, for the earliest 80+ readings at both airports. The 82 at DCA was 34.7 degrees above the 1872-2017 average of 47.3 for February 21st in DC. I believe that ties today with March 22, 1907 for the 4th largest maximum departure in DC history. The latter day reached 90 degrees, relative to the 1872-2017 average of 55.3 for March 22nd in DC.
  2. Our region's extreme run

    You're welcome. By the way, the 84-degree February reading in 1930 was actually on the 25th. Relative to the long-term (1872-2017) average maximum for February 25th in DC of 48.7 degrees, that represents a departure of 35.3 degrees, which is 3rd on the list of maximum departures in DC history. Second is January 26, 1950, whose 79-degree maximum represents a departure of 36.1 degrees from the historical average maximum of 42.9 degrees for January 26th. And number one on the list is March 23, 1907, whose 93-degree maximum represents a departure of 36.6 degrees from the historical average maximum of 56.4 degrees for March 23rd.
  3. Our region's extreme run

    No, Topper is correct. The most memorable thing about the 1997-98 El Nino was a run of eight straight 60+ readings at DCA between January 2-9, 1998. However, the maximum was only 69 on January 8th. In fact, we did not reach 80 until March 27th of that year, when the maximum was 81.
  4. Our region's extreme run

    Today's high of 77 at Dulles was the warmest ever for this early in the year. At DCA, on the other hand, today's high of 78 set a new record for today, but came up short of the 79 recorded on both January 26, 1950 and February 17, 1976.
  5. Weekend Snowfest/Rainfest/Mixed Mess?

    Commutageddon was Wednesday afternoon and evening, January 26, 2011, and featured 1.52 inches of precipitation at DCA and 1.31 inches at IAD. Nothing like that is being forecast for Saturday's storm in the DC area.
  6. February Discobs Thread

    Looks like a new Dulles record high for this early in the year. 75 was reached there on January 29, 1975 and again on February 1, 2002, but was not exceeded until February 23rd last year, when the temperature reached 77.
  7. Our region's extreme run

    Yesterday and today marked the first time since April 29-30, 2014 that DCA recorded consecutive days with at least one inch of precipitation. Also, during the first 11 days of February, DCA recorded more precipitation (3.78 inches) than it recorded during November 2017, December 2017, and January 2018 combined (3.44 inches).
  8. Our region's extreme run

    For a nearly "normal" temperature month at DCA, January 2018 was quite interesting. While the average temperature of 35.7 degrees was only 0.3 below the 1981-2010 normal, the standard deviation of the 31 daily averages from the monthly average was 12.7 degrees. That's the highest standard deviation for any month since February 1996, which was 13.1 degrees (highest ever for DC was the lengendary month of February 1899, which was 15.6). Further, January 2018 precipitation was only 0.94 inches at DCA, the fourth lowest in January in DC behind only 1948 (0.31), 1872 (0.35), and 1981 (0.38). Moreover, for the five months ending in January 2018, precipitation totalled only 6.89 inches at DCA, the third lowest for that period in DC behind only September 1930-January 1931 (5.43) and September 2001-January 2002 (5.50).
  9. DCA _ NYC _ BOS __ ORD _ ATL _ IAH ___ DEN _ PHX _ SEA -4.4 -3.8 -3.0 -6.3 -3.9 -1.3 2.6 8.1 3.1
  10. Drought

    February is normally relatively dry at DCA, although January is normally drier on a per day basis (average of 28.25 days in February vs 31 days in January). However, the last five months have been abnormally dry at DCA, with total precipitation totalling under 7 inches since September 1, 2017. Assuming that we receive no more than an inch or so between now and Wednesday, precipitation during September 2017 through January 2018 will be the third lowest total in DC for any September-January period (147 year record), behind only September 1930-January 1931 (5.43 inches) and September 2001-January 2002 (5.50 inches).
  11. Our region's extreme run

    According to my records, yesterday's 41-degree temperature spread at DCA (62 maximum, 21 minimum) was the greatest since December 22, 1998 (67/24).
  12. Our region's extreme run

    I just noted on the Capital Weather Gang discussion board that Kevin Benedict corrected one of my statements. The 13 days January 9-21, 1994 were slightly colder than the 13 days January 11-23, 1994 (21.2 vs. 21.8), and so our most recent 13 days came up 0.4 degrees shy of the coldest 13 consecutive days of January 1994. Also, January 9-22, 1994 averaged 21.6 degrees vs. 22.0 during January 10-23, 1994, and so our most recent 14 days came up 0.9 degrees shy of the coldest 14 consecutive days of January 1994. It is interesting to note, however, that while we came up just shy of beating the 13- and 14-day January 1994 cold streaks, we did surpass the coldest 13-day streak of January 1977 (January 11-23), which averaged 21.9 degrees at DCA. January 1977 was the 5th coldest January in DC history, at 25.4 degrees, compared with 28.8 degrees for January 1994, but it wasn't as intensely cold for any 13-day period.
  13. Our region's extreme run

    As best as I can tell, the two weeks ending today at DCA are the coldest in nearly 24 years. Specifically, December 26, 2017 through January 8, 2018 averaged 22.5 degrees, and I can't find a colder two-week period since January 10-23, 1994, which averaged 22.0 degrees. That cold snap was highlighted by one of the coldest days in DC history-- January 19th -- which saw a maximum of + 8 and a minimum of -4, which was the last sub-zero reading at DCA. Moreover, if only the most recent 13 days are considered (December 27th to January 8th), the average was only 21.6 degrees, which was lower than the coldest 13 days in January 1994 (21.8 average during January 11th through 23rd). To find a colder 13 days than the most recent 13, you need to go back to December 15-27, 1989, which averaged 20.5 degrees.
  14. Our region's extreme run

    Dulles fell below zero this morning for the first time since February 24, 2015. This morning's reading of -1 broke the record for January 7th of +1 that was set in 2014.
  15. DCA __ NYC __ BOS ___ ORD __ ATL __ IAH ____ DEN __ PHX __ SEA -3.5 -4.3 -3.9 -5.7 -3.8 -1.5 -1.4 +3.9 -0.2