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December 22-23, 2022: Warm Rain to Arctic Chill


WxUSAF
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1 minute ago, H2O said:

Does he remember in less than a 500 word essay tho?

How else can you summarize the synoptic environment that led up to the event and describe those 2 runs of the Eta that teased us with 2-4” forecasts before the NGM schooled it at 36 hours out?

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9 minutes ago, Terpeast said:

Just woke up. Did I miss anything? B)

Some discussion about a 4-6 week 'thaw' due to hairspray from the 70s with CAPE joining the dark side and a bunch of 500 word diatribes indirectly referencing something that he isn't allowed to mention. Nope, didn't miss anything. Usual pre-January form around here.

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The 6z NAM Nest was a good scenario for us.  
 
One interesting thing that has been happening is that the models have done away with the Friday morning warmth.  Instead of the 50s, we are in the lower 40s before the front blasts through.  
Crazy how cold it is this week so far and how much colder it's going to be buy rain is still our main precip
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54 minutes ago, MN Transplant said:

The 6z NAM Nest was a good scenario for us.  
 

One interesting thing that has been happening is that the models have done away with the Friday morning warmth.  Instead of the 50s, we are in the lower 40s before the front blasts through.  

3k nam is damn!  I'd take that in a heartbeat.

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2 minutes ago, Ji said:
56 minutes ago, MN Transplant said:
The 6z NAM Nest was a good scenario for us.  
 
One interesting thing that has been happening is that the models have done away with the Friday morning warmth.  Instead of the 50s, we are in the lower 40s before the front blasts through.  

Crazy how cold it is this week so far and how much colder it's going to be buy rain is still our main precip

Cold, then warms up to rain, then cold after. 

Story of my life in the mid atlantic since the late 70s

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1 hour ago, WxUSAF said:

How else can you summarize the synoptic environment that led up to the event and describe those 2 runs of the Eta that teased us with 2-4” forecasts before the NGM schooled it at 36 hours out?

I’m on page 13 of my paper on how the models all busted warm in the Dec 30 1997 nor’easter then at the last minute teased us with a big snow, yet we still failed due to a tragic dryslot when there was slightly too much separation between the surface and mid level energy also totally missed by guidance.  A double bust!  The result was probably our best chance for a major snowfall that season ended up a general 1-3” across the area which would have been a win except one run right at game time teased bigger rewards. 
 

Because we need to know…

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WWA up for the Winchester area if anyone besides me cares. 1-3 with 3-5 lollies. White Christmas chances looking better IMO. 

 

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
351 AM EST Wed Dec 21 2022

MDZ003-VAZ027>031-507-WVZ051>053-211700-
/O.NEW.KLWX.WW.Y.0035.221222T0900Z-221222T2100Z/
Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-
Northern Virginia Blue Ridge-Morgan-Berkeley-Jefferson-
351 AM EST Wed Dec 21 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 4 PM EST
THURSDAY...

* WHAT...Mixed precipitation expected. Total snow and sleet
  accumulations of 1 to 3 inches with localized amounts around 3
  to 5 inches possible, especially west of Interstate 81. Ice
  accumulations around a trace to a tenth of an inch with
  localized amounts around a tenth to a quarter inch along the
  Blue Ridge Mountains.

* WHERE...Portions of north central Maryland, northwest Virginia
  and panhandle West Virginia.
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12 minutes ago, psuhoffman said:

I’m on page 13 of my paper on how the models all busted warm in the Dec 30 1997 nor’easter then at the last minute teased us with a big snow, yet we still failed due to a tragic dryslot when there was slightly too much separation between the surface and mid level energy also totally missed by guidance.  A double bust!  The result was probably our best chance for a major snowfall that season ended up a general 1-3” across the area which would have been a win except one run right at game time teased bigger rewards. 
 

Because we need to know…

I remember that storm. That was the only legit snow we had that winter.

We got other storms where it snowed in NC/SC but rained here at 33-36 degrees. 

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1 minute ago, clskinsfan said:

WWA up for the Winchester area if anyone besides me cares. 1-3 with 3-5 lollies. White Christmas chances looking better IMO. 

 

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
351 AM EST Wed Dec 21 2022

MDZ003-VAZ027>031-507-WVZ051>053-211700-
/O.NEW.KLWX.WW.Y.0035.221222T0900Z-221222T2100Z/
Washington-Shenandoah-Frederick VA-Page-Warren-Clarke-
Northern Virginia Blue Ridge-Morgan-Berkeley-Jefferson-
351 AM EST Wed Dec 21 2022

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 4 PM EST
THURSDAY...

* WHAT...Mixed precipitation expected. Total snow and sleet
  accumulations of 1 to 3 inches with localized amounts around 3
  to 5 inches possible, especially west of Interstate 81. Ice
  accumulations around a trace to a tenth of an inch with
  localized amounts around a tenth to a quarter inch along the
  Blue Ridge Mountains.

* WHERE...Portions of north central Maryland, northwest Virginia
  and panhandle West Virginia.

I care man! Ha!  I do like the trend so far for temps to remain pretty much in the 30s west of the BR before the front moves through.  Should be able to hold onto some snow cover if we can get a nice burst for a few hours.  Typically, these things trend a bit colder and faster....as you know.

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