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Misc Winter Weather Support Group

First WWA for the Sterling WFO this season.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Baltimore MD/Washington DC
920 AM EST Mon Nov 20 2023

MDZ001-501-VAZ503-504-WVZ501-503-505-506-202230-
/O.CON.KLWX.WW.Y.0021.231121T0900Z-231121T1800Z/
Garrett-Extreme Western Allegany-Western Highland-
Eastern Highland-Western Grant-Western Mineral-Western Pendleton-
Eastern Pendleton-
920 AM EST Mon Nov 20 2023



...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 AM TO 1 PM
EST TUESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations of
up to one inch and ice accumulations of around one tenth of an
inch. Winds gusting as high as 50 mph.

* WHERE...Portions of western Maryland, western Virginia and
eastern West Virginia.

* WHEN...From 4 AM to 1 PM EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

lwx.png
 
Backdoor fronts can do a number this time of year. Around 40 along the northern Blue Ridge, 48 at IAD, 55 at RIC and 63 at RDU.
 
Eye candy on the Extended Euro
View attachment 138089
Control:
View attachment 138090
If you want big snowstorms and cold in the SE, it's hard to draw up a better look than that. Active STJ undercutting ridging out west, a rather tall PNA, and a strong signal for a west-based -NAO. Good recipe for holding off warm air intrusions from the STJ. Anyway, probably a good image to archive for daydreaming purposes. Unfortunately, the Euro is trash when it comes to this stuff. Fortunately for the Euro, so are the rest of the models.
 
If you want big snowstorms and cold in the SE, it's hard to draw up a better look than that. Active STJ undercutting ridging out west, a rather tall PNA, and a strong signal for a west-based -NAO. Good recipe for holding off warm air intrusions from the STJ. Anyway, probably a good image to archive for daydreaming purposes. Unfortunately, the Euro is trash when it comes to this stuff. Fortunately for the Euro, so are the rest of the models.
So all the models are trash?
 
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