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August 2021


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Much of the region saw temperatures rise into the upper 80s and lower 90s.

90° Days for Select Cities (through August 24):

Albany: 4 (2020: 13 days; 5-Year Average: 13.6 days)
Allentown: 21 (2020: 24 days; 5-Year Average: 27.6 days)
Baltimore: 45 (2020: 46 days; 5-Year Average: 44.6 days)
Boston: 21 (2020: 14 days; 5-Year Average: 17.2 days)
Bridgeport: 10 (2020: 11 days; 5-Year Average: 13.4 days)
Burlington: 12 (2020: 20 days; 5-Year Average: 13.0 days)
Harrisburg: 31 (2020: 35 days; 5-Year Average: 30.6 days)
Hartford: 21 (2020: 39 days; 5-Year Average: 29.0 days)
Islip: 6 (2020: 8 days; 5-Year Average: 9.4 days)
New York City-JFK: 9 (2020: 12 days; 5-Year Average: 10.2 days)
New York City-LGA: 22 (2020: 34 days; 5-Year Average: 29.4 days)
New York City-NYC: 14 (2020: 20 days; 5-Year Average: 18.2 days)
Newark: 36 (2020: 33 days; 5-Year Average: 31.2 days)
Philadelphia: 32 (2020: 36 days; 5-Year Average: 34.6 days)
Scranton: 16 (2020: 25 days; 5-Year Average: 16.4 days)
Washington, DC: 41 (2020: 46 days; 5-Year Average: 50.8 days)

New York City-Newark Average: 20 (2020: 22 days)
...Expected: 22 (based on regression equation tied to JFK-LGA-EWR data)

Tomorrow could be a degree or two warmer. In addition, the humidity will begin to increase. Much of the remainder of this week will feature unseasonably warm temperatures.

The ENSO Region 1+2 anomaly was -0.1°C and the Region 3.4 anomaly was -0.9°C for the week centered around August 18. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.41°C and the ENSO Region 3.4 anomaly has averaged -0.43°C. Neutral ENSO conditions will likely prevail into mid-September. Afterward, La Niña could begin to develop.

The SOI was +12.20 today.

The preliminary Arctic Oscillation (AO) figure was -0.976 today.

On August 22 the MJO was in Phase 2 at an amplitude of 0.675 (RMM). The August 21-adjusted amplitude was 0.962 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 87% probability that New York City will have a warmer than normal August (1991-2020 normal). August will likely finish with a mean temperature near 77.3° (1.3° above normal).

 

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1 hour ago, gravitylover said:

A 3 week winter... kinda like the one we just went through, same timing too.

I wasn't alive in 1914 (hard to believe) but I was for the Jan 15-Feb 4, 1961 onslaught...1913-14 was like 1966-67 without the snowstorm for Christmas...

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2 hours ago, gravitylover said:

A 3 week winter... kinda like the one we just went through, same timing too.

one of a few winters that got at least 30" of snow in 30 days...

30" in 30 days...
The short list..............................Newark...
02/24-03/24, 1896.....32.0"......
02/06-03/07, 1914.....35.2"......2/13-3/14, 1914.....32.5"
12/26-01/24, 1948.....43.4"......12/26-1/24/48.......42.1"
01/15-02/13, 1961.....34.1"........1/15-2/13, 1961......44.8"
01/16-02/14, 1978.....37.2"........1/16-2/14, 1978.....44.9"
02/02-03/03, 1994.....30.8".....2/8-3/9, 1994........28.6"**est...
12/14-01/12, 1996.....35.2".......12/14/95-1/12/96...42.7"

...................................................1/20-2/18, 2003.....30.7"
01/28-02/26, 2010.....38.2".....1/28-2/26, 2010......34.0"
01/07-02/05, 2011.....37.6"......12/26-1/24, 2011.....42.1"

01/21-02/19, 2014.....42.1"......1/21-2/19, 2014.......41.7"

01/17-02/15, 2016.....31.5"......1/17-2/15, 2016.......30.9"

..................................................1/31-3/1, 2021.........32.1"...as of 2/21

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37 minutes ago, Will - Rutgers said:

a lot of building air systems are barely designed to handle the kind of dews we have been seeing the last few years.  among the billion things I do at my job, i review air handler specifications before i buy them, and 80F is basically the upper limit of the cooling coils we spec.  maybe there's some sensitive areas with even more robust design requirements but i haven't seen it.  this is for 100% outside air laboratory air handlers.  no recycling.  the office air handlers recycle air and so are design to mix, say, 50/50 recycled air and outside air.

last year due to COVID we went to a 100% outside air protocol for ALL air handlers, even for office areas that were simply not designed to do that.  rain in the building became a problem where moist air condensed on the cold surfaces of air diffusers and started to drip.  we looked like assholes to the users but it wasn't our fault.

as global warming continues its long march to the sea, we are going to spend more and more energy just trying to fend it off--another feedback loop of doom.

edit: i know that had little to do with your post but i spent all day sweating to death and, you know, i'm not looking forward to more of it.

Tell you what, with sea level rise happening, these ugly high dew points and droughts and wild fires in the West, I would seriously consider more efficient desalinization machines being built so we can use the water from the oceans.  It would be a muscular move to solve multiple problems at once- if we were able to use enough ocean water at a high enough rate we could solve our drought problems and negate sea level rise at the same time.  The question is how long it will be when we have machines powerful enough to desalinate water from the oceans and use it and take it out fast enough to negate sea level rise.

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The last 7 days of August are averaging 82degs.(74/90), or +10.

Month to date is  77.1[+0.6].         August would end at 78.2[+2.2], more likely 77.1.

I reached 93 yesterday.

77*(75%RH) here at 6am, hazy blue.      80* by 9am.     81* at 10am.         82* by Noon      84* at 1pm.       86*(61%RH) at 3pm.      only  87* with a   HI =94* at 4pm.

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Morning thoughts…

Today will be mostly sunny and hot. High temperatures will likely reach the lower 90s in most of the region with some places topping out in the middle 90s.  Likely high temperatures around the region include:

New York City (Central Park): 90°

Newark: 95°

Philadelphia: 95°

Normals:

New York City: 30-Year: 82.3°; 15-Year: 82.0°

Newark: 30-Year: 83.6°; 15-Year: 83.1°

Philadelphia: 30-Year: 84.8°; 15-Year: 84.4°

The very warm weather will continue through Friday before it turns cooler for the weekend.

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10 hours ago, Will - Rutgers said:

a lot of building air systems are barely designed to handle the kind of dews we have been seeing the last few years.  among the billion things I do at my job, i review air handler specifications before i buy them, and 80F is basically the upper limit of the cooling coils we spec.  maybe there's some sensitive areas with even more robust design requirements but i haven't seen it.  this is for 100% outside air laboratory air handlers.  no recycling.  the office air handlers recycle air and so are design to mix, say, 50/50 recycled air and outside air.

last year due to COVID we went to a 100% outside air protocol for ALL air handlers, even for office areas that were simply not designed to do that.  rain in the building became a problem where moist air condensed on the cold surfaces of air diffusers and started to drip.  we looked like assholes to the users but it wasn't our fault.

as global warming continues its long march to the sea, we are going to spend more and more energy just trying to fend it off--another feedback loop of doom.

edit: i know that had little to do with your post but i spent all day sweating to death and, you know, i'm not looking forward to more of it.

Good morning, Will. I don’t envy your job. Critical analysis/decisions that ultimately affect many lives. “as global warming continues its long March to the sea ” is an apt phrase that saddens me not only for its seeming inevitable accuracy but also for the possibility that the sea may meet it half way. As always ….

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The current heatwave is helping Newark maintain the 4th warmest summer position. This is the first time since 2010 and 2011 that Newark had two consecutive top 10 warmest summers. So the strongest heat is focused west of the Hudson this year rather than east last summer. So LGA and EWR have traded places from last year.

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 78.2 7
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 LAGUARDIA AIRPORT, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2020 79.5 0
2 2010 79.1 0
3 2016 78.8 0
4 2005 78.0 0
5 2018 77.9 0
6 1966 77.5 0
7 2021 77.4 7
- 2006 77.4 0
- 1999 77.4 0
8 2019 77.3 0
- 2012 77.3 0
- 1991 77.3 0
9 1994 77.2 0
10 1995 77.1 0
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1 hour ago, bluewave said:

The current heatwave is helping Newark maintain the 4th warmest summer position. This is the first time since 2010 and 2011 that Newark had two consecutive top 10 warmest summers. So the strongest heat is focused west of the Hudson this year rather than east last summer. So LGA and EWR have traded places from last year.

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 78.2 7
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 LAGUARDIA AIRPORT, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Year
Mean Avg Temperature 
Missing Count
1 2020 79.5 0
2 2010 79.1 0
3 2016 78.8 0
4 2005 78.0 0
5 2018 77.9 0
6 1966 77.5 0
7 2021 77.4 7
- 2006 77.4 0
- 1999 77.4 0
8 2019 77.3 0
- 2012 77.3 0
- 1991 77.3 0
9 1994 77.2 0
10 1995 77.1 0

11 year cycle...

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7 minutes ago, uncle W said:

11 year cycle...

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
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36 minutes ago, forkyfork said:

myth

It doesn't mean that other summers can't be hot, of course they can, but the majority of the country has seen some of its hottest summers in this 11 year cycle, What convinced me is a map of temperature anomalies for the entire CONUS for 11 year cycle summers starting from 1933; it's wall to wall red.

 

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84/68 in day 3 of the late season heatwave.  Humidity creeping back up.  Ridge keeps us hot and mainly rain free till later Friday.  850 MB temps peak near or >18c later today and Thu.  Front comes through later Friday (8/27) and much of the coming weekend looks cloudy but warm/humid.  Next week by Mon (8/30) we do see the ridge rebuild and perhaps with enough clearing some more 90s Mon - Tue (8/31).

 

Beyond there the remnants of what will likely be Ida will need to be watched but overall warm / humid looks like a theme to end the month and start the next one.

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27 minutes ago, uncle W said:

every year is an 11year cycle now...

I have a specific definition for hot summer and I wont stray from it because those are the summers I remember, not these hot min fake heat summers.  I find those to be mediocre.

For EWR/LGA  45+ 90 degree days and at least 1 100+ high

For NYC 30+ 90 degree highs and at least 1 100+ high

For JFK 20+ 90 degree highs and at least 1 100+ high

How many summers meet my criteria?

 

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45 minutes ago, bluewave said:

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

all hail 1983 it's #1 on so many lists lol

 

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Just now, LibertyBell said:

I have a specific definition for hot summer and I wont stray from it because those are the summers I remember, not these hot min fake heat summers.  I find those to be mediocre.

For EWR/LGA  45+ 90 degree days and at least 1 100+ high

For NYC 30+ 90 degree highs and at least 1 100+ high

For JFK 20+ 90 degree highs and at least 1 100+ high

How many summers meet my criteria?

 

NYC will never meet that criteria unless Central Park has a brush fire...

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