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October 2021


Stormlover74
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6 hours ago, SnoSki14 said:

I don't want mid August weather in mid October. Good riddance to the crazy heat.

I mean it's more like early September weather, which is ideal.

Ideal is temps in the 70s for highs and 50s for lows

 

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Morning thoughts…

It will become mostly cloudy but remain unseasonably warm. Showers and thunderstorms are possible as a strong cold front moves across the region. High temperatures will likely reach the middle and upper 70s in most of the region. Likely high temperatures around the region include:

New York City (Central Park): 75°

Newark: 80°

Philadelphia: 80°

Normals:

New York City: 30-Year: 64.4°; 15-Year: 65.2°

Newark: 30-Year: 65.9°; 15-Year: 67.1°

Philadelphia: 30-Year: 67.1°; 15-Year: 67.9° 

Sunday and Monday will be autumn-like days with readings mainly topping out in the upper 50s and lower 60s.

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The next 8 days are averaging 61degs.(54/69), or +3.

Month to date is  65.8[+5.0].         Could be  64.1[+4.3] by the 24th.

Reached only 75 yesterday with seabreeze.

Today:  73-76, wind s. to w., cloudy, rain{up to 0.5"} 6pm-Midnight.

67*(85%RH) here at 6am.     70*-71* from 9am-1pm. and windy.

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10 hours ago, lee59 said:

I just find it interesting that JFK would have an average January temperature colder than LaGuardia. It would be like Oceanside having a colder January average than say Oyster Bay. If it is radiational cooling then maybe the thermometer at JFK is in a more secluded area than LaGuardia, like in the heat island affect.

JFK and LGA were nearly identical in January during the 1981-2010 climate normals period. But it changed during the new 1991-2020 climate normals. JFK is the only station in our area with not much of a January temperature increase for the new January climate normals. I doubt it’s UHI since LGA rose at exactly the same rate as HPN which is in a more rural part of our area near the CT border in Westchester. But the more interesting question is why did the average temperature at JFK hold steady while all the surrounding areas rose between +1.1 and +1.5°?

https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-monthly&timeframe=81&location=NY

Station…81-10….91-20…January increase

EWR….31.6…32.8…+1.2

NYC….32.6...33.7…+1.1

LGA….32.9..34.4…+1.5

JFK….32.7….32.8…+0.1

ISP…..30.6…31.9…..+1.3

HPN…28.3…29.8….+1.5

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This is another delayed fall. A top 3 warmest first half of fall around the area. Notice how many top 10s in the last several years. Even parts of Long Island averaged close to 70°.


 

Time Series Summary for NEWARK LIBERTY INTL AP, NJ
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Mean Avg Temperature Sep 1 to Oct 15
Missing Count
1 2021-10-15 71.0 0
2 1961-10-15 70.6 0
3 2005-10-15 70.2 0
4 1959-10-15 70.0 0
5 2017-10-15 69.9 0
6 2018-10-15 69.7 0
7 1990-10-15 69.1 0
8 2015-10-15 69.0 0
- 2007-10-15 69.0 0
- 1973-10-15 69.0 0
- 1971-10-15 69.0 0
9 1983-10-15 68.7 0
10 1970-10-15 68.6 0


 

Time Series Summary for FARMINGDALE REPUBLIC AP, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Mean Avg Temperature Sep 1 to Oct 15
Missing Count
1 2005-10-15 69.0 1
2 2021-10-15 68.5 0
3 2018-10-15 68.0 0
- 2017-10-15 68.0 0
4 2015-10-15 67.8 0
5 2016-10-15 67.6 5
6 2007-10-15 66.5 0
7 2002-10-15 66.0 0
8 2011-10-15 65.7 0
- 2010-10-15 65.7 0
9 2020-10-15 65.6 2


 

Time Series Summary for ISLIP-LI MACARTHUR AP, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Mean Avg Temperature Sep 1 to Oct 15
Missing Count
1 2018-10-15 68.1 0
2 2005-10-15 68.0 0
3 2021-10-15 67.9 0
- 2017-10-15 67.9 0
4 1990-10-15 66.8 0
5 2015-10-15 66.6 0
6 2011-10-15 66.4 0
7 2007-10-15 66.2 0
- 1983-10-15 66.2 0
8 1980-10-15 66.0 0
9 1971-10-15 65.6 0
10 1998-10-15 65.3 0
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Roller coaster trending overall nearer to normal beyond today's warmth.  Clouds racing in and put a lid on 80s and most of the area will top out in the 70s before the front moves through with storms and much drier/cooler air in its wake. 

 

Taste of fall Sun (10/17) through Tue (10/19) much cooler and possible coolest of the season so far. By Tue pm and into Thu, heights and warmer than normal returns with gorgeous mid fall days bright sunshine and mid to perhaps a few stray upper 70s.  Cooler again by later next week into next weekend (10/23).   GFS looks long range stormy in the 10/24 period and ECM looks cooler.  Looks like we het back into hungup cut off ULL towards the end of the month and depending where these ULL develop and close off will determine if we end on the warmer side overall.

 

10/15 (highs)

EWR: 84
LGA: 83
New Brnswck: 82
BLM: 82
PHL: 82
TEB: 81
ACY: 80
TTN: 80
NYC: 79
ISP: 78
JFK: 77

 

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2 hours ago, bluewave said:

JFK and LGA were nearly identical in January during the 1981-2010 climate normals period. But it changed during the new 1991-2020 climate normals. JFK is the only station in our area with not much of a January temperature increase for the new January climate normals. I doubt it’s UHI since LGA rose at exactly the same rate as HPN which is in a more rural part of our area near the CT border in Westchester. But the more interesting question is why did the average temperature at JFK hold steady while all the surrounding areas rose between +1.1 and +1.5°?

https://www.ncei.noaa.gov/access/us-climate-normals/#dataset=normals-monthly&timeframe=81&location=NY

Station…81-10….91-20…January increase

EWR….31.6…32.8…+1.2

NYC….32.6...33.7…+1.1

LGA….32.9..34.4…+1.5

JFK….32.7….32.8…+0.1

ISP…..30.6…31.9…..+1.3

HPN…28.3…29.8….+1.5

My stats were from 2000-2021. That would mean LGA actually fell .3 degrees from the 1991-2020 period. JFk went up .2 in the same time frames. Islip also fell in the 2000-2021 time frame compared to 1990-2020 by some .4 degrees. Central Park fell .3 also. Newark stayed about the same. Sounds like the 1990s were very mild January.

Station    2000-2021    1990-2020

JFK           33                    32.8

LGA           34.1                  34.4

ISP            31.5                  31.9

EWR         32.8                 32.8

NYC          33.4                 33.7

I understand my stats are not a 30 yr time frame. I got them off the NWS site and they listed the 2000-2021 time frame. Interesting that JFK is the only station of the immediate metro area that rose.

 

 

 

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