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September 2023


Stormlover74
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6 hours ago, forkyfork said:

https://twitter.com/ECMWFbot

if you go through the runs it had the right idea most of the time except for a west shift that lasted about two days. if the whole setup were shifted west that could have meant an atlantic city landfall panic before turning back into a suffolk landfall

The GFS easterly bias helped it win the Lee 5 day forecast challenge.

 

 

 

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The next 8 days are averaging  69degs.(62/77) or +1.

Reached 79 here yesterday at 6pm.

Today:   73-78, wind w., increasing clouds, Rain by 9pm, 65 tomorrow AM.

61*(70%RH) here at 7am.    66* at 9am.      69* at Noon.      73* at 3pm.    Reached 74* at 4pm.      70* at 8pm.

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6 hours ago, Wxoutlooksblog said:

The pattern is transitioning into fall. And yes in a very short time-frame we've gone from tracking Lee to tracking the arrival of an autumn air mass into the Great Lakes. The models are struggling. A few days ago the models were depicting a warm to very warm finish to September and start to October. It does not appear that way now. It could change again but I wouldn't bet on it. The endless summer is going to end.

WX/PT

Looks like the warmer minimums for late September will drive the departures with plenty of onshore flow and high pressure to the north. Could get interesting for heavy rainfall if we get some close in tropical development . Highs may get muted if we get a lot of onshore flow, clouds, and moisture.
 

New run stronger blocking high SE Canada

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Old run

 

72ED3F67-DC9E-4823-9BF6-6F1D56B13DB6.thumb.png.a7aa239355ef4451534b2314bc8f0ef5.png

 

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1 hour ago, lee59 said:

Dipped to 49 here this morning. UHI in full affect as Central Park currently 60. Good radiational cooling night.

LGA still remains the undefeated UHI capitol. I also think the ASOS right on the warmer Sound/East River helps. The marshy areas around the EWR and JFK sensors helped them radiate better than LGA and NYC. 
 

Lows around NYC

NYC…59

LGA….62

JFK….56

EWR…56

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5 minutes ago, qg_omega said:

Euro is a terrible model

It only seems to be off with storm tracks near the East Coast. The temperature and teleconnection forecasts are pretty good. So not sure how much the crew at the ECMWF modeling center care about our local forecasts. Maybe they are willing to sacrifice some regional storm track reliability to achieve higher overall hemispheric skill scores. We need more modelers on these forums since the forecasters and modelers are two distinct groups.

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41 minutes ago, Stormlover74 said:

NAMs are wetter but screw western LI down to coastal nj

But 12z RGEM not giving much except for central-eastern LI and well to the northwest. Overall I think it's looking like a decent soaking, but nothing like what those earlier Euro runs were showing. Maybe we can get a half inch here. Probably have to go well to the east to get much more significant rain. 

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1 minute ago, winterwx21 said:

But 12z RGEM not giving much except for central-eastern LI and well to the northwest. Overall I think it's looking like a decent soaking, but nothing like what those earlier Euro runs were showing. Maybe we can get a half inch here. Probably have to go well to the east to get much more significant rain. 

Meh I'm thinking a quarter inch if we're lucky

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73 / 57 clouds fast approaching from the west. So another 1 - 2 hours of this splendid weather.  Rain by later this evening / tonight, already showers into PA.  Rain tomorrow with trough pushing through.  By Tue (9/19) heights are rising into the east with flow going around and onshore flow Wed (9/20) - Fri (9/22) .  Flow goes southerly by Sat (9/23) wit an overall warm and wet look as the Atlantic ridge slows anything down along the coast.  Could be a very wet finish, should the Atlantic ridge be stronger itll push heaviest rains west but current tendencies this year looks like coastal warm/wet tropics potential finish.

 

GOES16-NE-GEOCOLOR-600x600.gif 

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