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December 2020 General Discussions & Observations Thread


bluewave
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The next 8 days are averaging 43degs.(38/47).       Making it 38degs., or +1.0.

GFS has aTrace of snow today and that is it.

CMC, EURO have action around mid-month.

GFS heads for 70* near Christmas.

GEFS: The only 5-Day period that is even near Normal is centered on the 18th.

35*(65%RH) here at 6am, thin overcast.     (It was 33* near midnight).        36* at 9am.       38* by Noon.

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8 minutes ago, bluewave said:

Yeah, December 1996 style. Greenland blocking linking up with a piece of the Western Atlantic Ridge. Notice the unfavorable Pacific maintaining a mild Pacific airmass across much of the US. 

F1108262-02D6-43A8-BD09-93831490566A.thumb.png.629f63ee7f180e2cb803ad9a39f3d95b.png

DFBBB022-BFF0-4C42-9C09-DA1557708E9A.thumb.png.fc4ffdac372d28e65f9ae4fab05292ae.png

3479D8EE-F0B3-4AF0-8C83-004E8E08899D.png.0c3887bc85c90c32ba6ef304f49bd6b2.png

 

AO looks really good on the ensembles. We just have to flip the epo.

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Morning thoughts...

Today will be variably cloudy. Some snow flurries and snow showers are possible. A rain shower is also possible during the afternoon. Some parts of the region could pick up a coating of snow. Temperatures will likely top out in the upper 30s and lower 40s in most of the region. Likely high temperatures around the region include:

New York City (Central Park): 38°

Newark: 41°

Philadelphia: 42°

Milder air will return tomorrow and prevail through the remainder of the week.

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3 minutes ago, JoshSnow said:

nice snow showers coming up. Suburbs can get a nice dusting with this. I’ll be front I thought it was going to be virga but this is good snow showers coming up

245C2A94-DFB4-43F1-819E-AD1C5CAF707C.png

That’s quite the ringer volume you have set there but I digress...just some virga in my yard so far, hoping to get some flakes at some point as the heavier echoes move through. 

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1 hour ago, bluewave said:

The RMM charts don’t seem to be reflecting the actual strength of the forcing over the Maritime Continent. Notice how robust the VP anomalies are compared to the RMM charts. This is probably related to the La Niña which also produces forcing over the Maritime Continent. The 500 mb composite  favors a mild +EPO pattern.

FFCC11A9-3FFD-485E-8506-D79757BD4AA8.gif.2a370f8bb60cc4b70fa099d12a6653b5.gif
40A03AB4-8D59-4E87-B03F-E55AE645FE8E.png.4ac4099a7e8567c368928e9dad4ce174.png

E433E06E-5A3A-4711-878A-CC2E3FC0A2AD.png.9453c60420c01781d57f5f39b0dff92f.png

Looks like some p7 at the end of the month could improve the pac. 

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3 hours ago, bluewave said:

Yeah, December 1996 style. Greenland blocking linking up with a piece of the Western Atlantic Ridge. Notice the unfavorable Pacific maintaining a mild Pacific airmass across much of the US. 

F1108262-02D6-43A8-BD09-93831490566A.thumb.png.629f63ee7f180e2cb803ad9a39f3d95b.png

DFBBB022-BFF0-4C42-9C09-DA1557708E9A.thumb.png.fc4ffdac372d28e65f9ae4fab05292ae.png

3479D8EE-F0B3-4AF0-8C83-004E8E08899D.png.0c3887bc85c90c32ba6ef304f49bd6b2.png

 

Southeast ridge is non existent which is not normal for Niña 

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4 minutes ago, SnoSki14 said:

Bluewave always with the accurate response to rain on the weenie parade.

Pacific puke looks to dominate rest of the month. We'd have to be lucky to score with such a putrid airmass over us.

Odds would improve in January.

Minimal improvement on the PAC side can put us in the game as long as the ATL side cooperates.  Even a decent WPO can inject some arctic air for the NAO to hold in place.  Need to tamp that PAC jet down just a bit though.  It's been a killer these past few years.

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15 minutes ago, SnoSki14 said:

Bluewave always with the accurate response to rain on the weenie parade.

Pacific puke looks to dominate rest of the month. We'd have to be lucky to score with such a putrid airmass over us.

Odds would improve in January.

We will be fine if the teleconnection stay like this along with the epo going negative. 

Hopefully the blocking which Allsnow alluded to this morning on the ensembles in the long range move up in time.

20201209_104714.jpg

20201209_104704.jpg

20201209_104651.jpg

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