Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
233 PM EST Thu Jan 19 2023

Valid 00Z Fri Jan 20 2023 - 00Z Sun Jan 22 2023


...Snow and a wintry mix expected for portions of Upstate New York and New
England tonight into Friday...

...Heavy snow possible for portions of the High Plains late Friday and
Saturday...

...Frost and freezing temperatures likely for parts of Northern and
Central California...

The ongoing areas of heavy snow across the upper Great Lakes region are
expected to diminish as the associated area of low pressure tracks off to
the east tonight.  Ahead of the low, rain is forecast across southern New
York and New England, with a wintry mix and snow farther to the north. 
Accumulating ice and/or a few inches of snow are expected to result in
hazardous travel conditions across portions of Upstate New York and
central to northern New England tonight into Friday morning.  A second low
developing along the Northeast coast will likely bring several inches of
snow to portions of southern New Hampshire and southwestern Maine.

In the West, a developing upper level low is forecast to drop southeast
from the Great Basin into the Four Corners region, bringing colder air and
additional snows across southern Utah and northern Arizona into the
southern Rockies tonight into Friday.  This system is expected to move
east of the of the Rockies, with snows developing over portions of the
High Plains beginning late Friday and continuing into Saturday.  Areas of
heavy snow are expected to develop north and west of the associated
surface low as it tracks east of the Rockies through the High Plains, with
several inches of snow possible from far northeastern New Mexico to
western Kansas.  Windy conditions, resulting in blowing snow and reduced
visibilities, are expected to contribute to hazardous travel conditions
across portions of the region.

Meanwhile farther to the west, dry conditions with below-average
temperature are expected through the end of the week across California. 
Freeze Warnings remain in effect for tonight through Friday morning and
again Friday night through Saturday morning for the interior portions of
the San Francisco Bay Area and the Central Coast.  A Freeze Warning is
also in effect for the northwest portions of the San Joaquin Valley
tonight, with a Watch covering a larger portion of the Valley for Friday
night.  Precautions should be made to protect people, pets and livestock,
sensitive plants, and exposed plumbing from these hazardous temperatures. 

Pereira

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