533
FXUS01 KWBC 120741
PMDSPD

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

$$