Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
259 PM EST Thu Dec 1 2022

Valid 00Z Fri Dec 2 2022 - 00Z Sun Dec 4 2022

...Heavy snow for parts of the Northern/Central Rockies and the Sierra
Nevada to close out the week...

...Very cold weather returns to the north-central U.S. for Friday and
Saturday...

The cold airmass that is currently over the Eastern U.S. will continue to
modify going into Friday and the weekend as the surface high moves
offshore and more of a southerly flow commences.  The anomalous warmth
over the Plains will then reach the East Coast on Saturday ahead of the
cold front, with highs on the order of 10-20 degrees above normal before
reality sets back in for Sunday with colder weather returning.  A sharply
colder arctic airmass will sink southward across the northern Rockies,
northern Plains, and then the Upper Midwest to close out the work week,
with some subzero overnight lows possible across portions of Montana,
North Dakota, and northern Minnesota.

Showers and a few thunderstorms are expected to develop starting Friday
evening from the Mid-South to the Ohio Valley as moisture is advected
north ahead of the approaching front.  This will likely increase in
coverage going into Saturday for the Mid-Atlantic and the Northeast U.S.,
which could end as a brief period of snow across the higher terrain of the
interior Northeast states.  Given the progressive nature of the front,
rain and snowfall totals will be kept in check with generally light to
moderate amounts.  Heavy snow will continue for the Sierra Nevada through
Friday morning and then taper off by the afternoon, and then a second
round of snow is appearing likely for this region by late Saturday and
into Sunday as another storm system approaches California.  Noteworthy
snow is also expected across the higher terrain of Utah, Wyoming, and
central Colorado as the moisture plume from the Pacific advects farther
inland, with up to a foot of accumulation possible. 

High winds will also be making weather headlines on Friday across the
western High Plains, where high wind warnings are currently in effect from
northeast New Mexico to eastern Wyoming.  Winds could gust in excess of 50
mph at times, and there will also be a greater fire weather danger owing
to the combination of high winds and low humidity.

Hamrick

Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php