bluewave

Updated for 3.39 at Bayport, NY Station Number: NY-SF-125 Station Name: Bayport 1.0 SSE Observation Date 8/28/2021 7:00 AM Submitted 8/28/2021 6:29 AM Total Precip Amount 3.39 in.

Currently the 2nd wettest summer in NYC. 3rd wettest and 4th warmest at Newark. So extremes of warm and wet in our more subtropical climate. Time Series Summary for NY CITY CENTRAL PARK, NY - Jun through Aug Click column heading to sort ascending, click again to sort descending. Rank Year Total Precipitation Missing Count 1 2011 25.23 0 2 2021 24.03 4 3 1975 22.40 0 4 1989 22.36 0 5 2009 21.38 0 6 2006 20.79 0 7 2007 20.62 0 8 1928 20.50 0 9 1903 20.43 0 10 1927 20.01 0 Time Series Summary for NEWARK LIBERTY INTL AP, NJ Click column heading to sort ascending, click again to sort descending. Rank Year Mean Avg Temperature Missing Count 1 1993 79.2 0 2 2010 78.7 0 3 1994 78.5 0 4 2021 78.4 4 5 2011 78.0 0 6 2005 77.8 0 7 1988 77.7 0 8 2020 77.6 0 - 2016 77.6 0 - 1973 77.6 0 9 1999 77.1 0 10 1995 77.0 0 Time Series Summary for NEWARK LIBERTY INTL AP, NJ - Jun through Aug Click column heading to sort ascending, click again to sort descending. Rank Year Total Precipitation Missing Count 1 2011 23.57 0 2 2003 21.30 0 3 2021 20.46 4 4 2007 19.27 0 5 1971 19.09 0 6 1975 18.78 0 7 2019 18.76 0 8 2009 18.70 0 9 1942 17.71 0 10 1989 17.67 0

Suffolk is the latest location this summer to require water rescues from cars. 3.39” so far in Bayport. Station Number: NY-SF-125 Station Name: Bayport 1.0 SSE Observation Date 8/28/2021 7:00 AM Submitted 8/28/2021 6:29 AM Total Precip Amount 3.39 in.

The only real way is to keep the AC going. Many schools don’t have AC so they are prime spots for mold growth. Better to prevent mold than have to deal with cleaning it up.

Yeah, JFK had over 40 days with 75°+ dew points for the first time in 2018. The record high dew points persisted into September. That’s why there was so much mold damage at the local schools and colleges. https://www.northjersey.com/story/news/morris/2018/09/11/mold-contamination-could-keep-some-nj-schools-closed-weeks/1269827002/ https://newyork.cbslocal.com/2018/10/17/how-to-get-rid-of-mold/

The 17h day with a 75°+ dew point continues the record streak since 2016.

With a high so far of 96° today, Newark moves up to the 4th highest number of 95° or warmer days at 18. Time Series Summary for NEWARK LIBERTY INTL AP, NJ - Jan through Dec Click column heading to sort ascending, click again to sort descending. Rank Year Number of Days Max Temperature >= 95 Missing Count 1993 25 0 2010 21 0 1988 20 0 1944 20 0 2021 18 127

The HREF has been doing a great job this summer with the heavy rainfall and flash flooding signals. But the locations of the heaviest amounts have been off at times. So we may have to wait until nowcast time to know which areas will see the highest totals with this next event.

Islip moves into 2nd place for most 90° days in August. NYC will probably reach 90° shortly. So ISP will have a 7 to 5 August 90° day lead over NYC. The wet vegetation above the sensor in NYC is really distorting the climate record. You can see how NYC easily beat ISP in 1980 before the tree growth really got out of hand. Time Series Summary for ISLIP-LI MACARTHUR AP, NY - Month of Aug Click column heading to sort ascending, click again to sort descending. Rank Year Number of Days Max Temperature >= 90 NYC 1 1980 8 15 2 2016 7 7 - 2005 7 9 2021 7 5

This is the first time that Newark had bookend winter snowfall followed by bookend summer heat. Monthly Total Snowfall for NEWARK LIBERTY INTL AP, NJ Click column heading to sort ascending, click again to sort descending. Year Dec Jan Feb Season 2020-2021 11.9 3.2 30.6 45.7 Monthly Highest Max Temperature for NEWARK LIBERTY INTL AP, NJ Click column heading to sort ascending, click again to sort descending. Year Jun Jul Aug Season 2021 103 97 99 103

Long Island is close to its 9th top 10 warmest average summer temperature since 2010. Time Series Summary for ISLIP-LI MACARTHUR AP, NY Click column heading to sort ascending, click again to sort descending. Rank Year Mean Avg Temperature Missing Count 1 2010 74.7 0 2 2020 74.6 0 3 1999 74.5 0 4 2016 74.4 0 5 2011 73.9 0 6 2019 73.8 0 7 2021 73.7 5 8 2018 73.5 0 - 2005 73.5 0 9 2013 73.4 0 10 2012 73.3 0 - 1991 73.3 0

100° heat index on the South Shore with a 77° dew point. Wantagh 88 77 HX 100

The SSTs are peaking later this year than recent summers. Notice the upper 70s ocean temperatures now from the Jersey Shore to the LI South Shore. STATION/POSITION TIME SKY/WX TEMP WIND PRES VSBY WAVE AIR SEA DIR/SP/G HT/PER (UTC) (F) (DEG/KT/KT) (MB) (MI) (FT/S) NY Harb Entrance 1650 77 170/ 8/ 10 1019.3 2/ 6 20 S Fire Island 1650 75 1019.7 2/ 6 Great South Bay 1630 80 81 220/ 8/ 10 N/A 23 SSW Montauk P 1650 74 72 240/ 6/ 8 1019.8 2/ 6 15 E Barnegat Li 1656 78 N/A 2/13 Hudson Canyon 1650 78 78 230/ 8/ 10 1020.8 2/12

Just because it gets a sea breeze first, doesn’t mean there are any problems with the temperatures. Wantagh is currently 87/74 with a very humid sea breeze. Farmingdale a little further from the shore is 90/71.

Tomorrow will be the 50th day this year with a 70° dew point. We have never had 6 consecutive years with 50 days before. So the consistently high dew points are a big part of our new subtropical climate.

It wouldn’t be a surprise if we find a way to pick up more measurable rainfall this weekend. There were only two weekends since the Memorial Day weekend with no rainfall. So my guess this is probably a new record for the summer season. NYC weekends May 29-30 1.35 Jun 5-6 dry Jun 12-13. .01 Jun 19-20 .14 Jun 26-27 .04 Jul 3-4 .34 Jul 10-11 .28 Jul 17-18 .65 Jul 24-25 .45 Jul 31-Aug 1 .04 Aug 7-8 .21 Aug 14-15 dry Aug 21-22 7.12

Really large divergence between the area and extent in the Beaufort and Chuckchi.

After record warmth in June and a pullback of the heat in a July, the heat is coming on strong in August. Even Long Island is seeing impressive heat for August. This is only the 8th August at Islip to reach 5 days of 90°. Time Series Summary for ISLIP-LI MACARTHUR AP, NY - Month of Aug Click column heading to sort ascending, click again to sort descending. Rank Year Number of Days Max Temperature >= 90 Missing Count 1980 8 0 2016 7 0 - 2005 7 0 1995 6 0 2021 5 6 - 2018 5 0 - 2006 5 0 - 2002 5 0

Islip tied the record high and Newark missed by 1°. RECORD EVENT REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 0441 PM EDT WED AUG 25 2021 ...RECORD HIGH TEMPERATURE TIED AT ISLIP NY... A RECORD HIGH TEMPERATURE OF 92 WAS SET AT ISLIP NY TODAY. THIS TIES THE OLD RECORDS OF 92 SET IN 1998 AND 1969. CLIMATE REPORT NATIONAL WEATHER SERVICE NEW YORK, NY 437 PM EDT WED AUG 25 2021 ................................... ...THE NEWARK NJ CLIMATE SUMMARY FOR AUGUST 25 2021... VALID TODAY AS OF 0400 PM LOCAL TIME. CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1893 TO 2021 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) TODAY MAXIMUM 96 255 PM 97 1993 84 12 92 MINIMUM 73 509 AM 48 1940 67 6 73 AVERAGE 85 75 10 83

Heat indices approaching 100° in NJ. Newark/Liberty MOSUNNY 95 66 38 VRB5 30.08F HX 98 Somerville SUNNY 92 71 50 CALM 30.07F HX 98

You are pretty much just talking about the immediate shore areas. We have had one top 10 hottest summer after another for the last 10 years. Outside of places like JFK, a SW flow can be very hot also. But JFK has been leading the area in highest dew points since the record humidity increase in 2016. So the the higher heat indices at a place like JFK can make it feel as hot without all the 90° days like a westerly flow summer has at the South Shore.

87/68 here. Once the winds pick up, the higher dew points to our south and west will work in. Thursday into Friday looks like the highest dew points ahead of the front.

I wonder how the Euro seasonal was able to do so well with a summer 500mb forecast for North America issued on May 1st? It turned out to be a battle between the WAR and the ridge over Western North America. People would really take notice if the Euro ever did this well with a winter forecast.

Boston is currently in 1st place for warmest summer. But it’s doing it with July being the coolest summer month. Has this ever happened before at an Eastern US weather station? Monthly Mean Avg Temperature for Boston Area, MA (ThreadEx) Click column heading to sort ascending, click again to sort descending. Year Jun Jul Aug Season 2021 74.4 72.4 76.4 74.4 1983 70.7 78.0 73.6 74.1 1949 71.6 76.3 74.4 74.1 1994 71.9 77.5 72.4 73.9 2019 68.2 78.7 74.1 73.7 2018 67.7 76.1 77.4 73.7 2016 68.4 76.1 76.4 73.6 2010 70.3 77.2 73.4 73.6 1952 70.6 77.5 72.2 73.4 1984 70.5 74.7 74.6 73.3 1973 70.0 74.2 74.8 73.0 2020 69.2 75.3 74.1 72.9 2013 69.6 77.1 72.1 72.9 2011 67.1 77.3 73.9 72.8 1991 70.0 74.6 73.7 72.8 1955 66.8 77.2 74.5 72.8