Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
1103 AM EST Mon Dec 26 2022

Valid 00Z Tue Dec 27 2022 - 00Z Thu Dec 29 2022

...Increasingly stormy weather to impact the West Coast through Tuesday
before spreading across Rockies...

...Lingering lake-effect snows downwind from Great Lakes will become less
intense and fade into Tuesday...

...Temperatures in the Midwest and East moderate this week...


The western U.S. will be transitioning to a more active, stormy pattern as
a cyclone and its attendant cold front and atmospheric river move inland
and track through the Intermountain West spreading a few inches of
rainfall/feet of snowfall at elevation possible down the West Coast into
central California through Tuesday night/early Wednesday morning where the
potential threat for widely scattered instances of flash flooding are
possible at lower elevations, particularly in burn scars.  Increasingly
strong winds are a concern through Tuesday in these areas, especially near
the coast and at higher elevations as the center of this potent low
reaches coastal Washington.  To its east, temperatures will moderate
across the Midwest and East ahead of this system.  Bands of diffuse and
fluffy lake-effect snow will persist within a regime of increasingly
southwest winds.  These bands will weaken and shift northward with a warm
front Monday evening into Tuesday, with locally hazardous travel
conditions possible for as long as they persist.

Roth


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