Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
240 AM EST Wed Nov 12 2025

Valid 12Z Wed Nov 12 2025 - 12Z Fri Nov 14 2025

...Temperatures moderate in the East; West and Central U.S. warm up...

...Snow expected to continue across Lower Great Lakes and interior
Northeast/New England...

...Strong cyclone developing off the West Coast will bring heavy rainfall,
heavy mountain snow and strong winds to the West Coast beginning tonight...


The upper trough responsible for producing strong winds, frigid
temperatures and lake effect snow in the East will lift north today.
Strong winds will diminish, the polar airmass will moderate, but some weak
lake effect snow will linger through Thursday, due to westerly flow off of
the Lower Great Lakes. Meanwhile, a large upper ridge will gradually
migrate into the Central U.S. over the next couple of days. Southerly flow
into the West and Central U.S. will generate above average temperatures
for much of the Plains. Highs in the 60s and 70s will represent +20-30
degree anomalies for much of the Northern and Central Plains on Thursday
and Friday.

An amplified trough in the eastern Pacific will begin impacting the West
Coast tonight. A strong surface low pressure system will likely bring
strong winds, heavy rain and heavy mountain snow to the West, with the
heaviest precipitation focusing over California on Thursday. Winter storm
warnings are in effect for portions of the southern Sierra, while winter
weather advisories are in effect for northern portions of the Sierra for
this Thursday. High wind warnings and wind advisories are also in effect
for much of coastal California and southern-central Oregon tonight through
Thursday. A slight risk (at least 15% chance) of excessive rainfall is in
effect for portions of the Bay Area as well as upslope areas of the Sierra
Nevada on Thursday, while scattered to isolated flash flooding will also
be possible as far south as the Los Angeles metro area. Warm advection out
of the south will contribute to above average temperatures across the West
over the next few days.
 

Kebede


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