Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
241 PM EST Sat Nov 26 2022

Valid 00Z Sun Nov 27 2022 - 00Z Tue Nov 29 2022

...Widespread showers and thunderstorms will spread from the Southern
Plains today into the East on Sunday...

...Precipitation chances increase for the West with some heavy snow
possible in the mountains...

A strong storm system currently over the Southern Plains/Lower Mississippi
Valley will move through the Southeast, Ohio Valley, and Mid-Atlantic
during the day Sunday before moving through the Northeast Sunday evening.
Widespread showers and thunderstorms will lead the accompanying frontal
system as it passes through the eastern half of the country. Rainfall
totals look to broadly range between a quarter inch to an inch. Heavier
totals between 1-2 inches, locally higher, are forecast to follow near the
surface low track through portions of the Midwest from Missouri to Ohio.
Temperatures will be cool enough that a wintry mix will fall in the
Interior Northeast overnight Sunday/early Monday morning, though little to
no accumulation is expected. A surge of warmer air northward ahead of the
storm system will lead to above average highs across the East Sunday, with
40s and 50s for the Northeast and Lower Great Lakes, 60s for the
Mid-Atlantic and Ohio Valley, 70s for the Southeast, and 80s in Florida.
Highs will drop about 10 degrees Monday after the passage of a cold front.

Snow showers will linger over the Central Rockies overnight Saturday
behind the passage of a frontal system and under the influence of an
upper-level shortwave. More significant precipitation chances will
continue to overspread the Pacific Northwest tonight and into the Great
Basin and Rockies on Sunday as another frontal system and deepening
upper-level trough move into the region from the west. This will lead to
lower elevation rain and higher elevation snow in the Pacific Northwest
and snow further into the Interior West in the Great Basin and Rockies.
The heaviest snow is forecast to fall in the Cascades where Winter Storm
Warnings are in effect for snow totals of 1-2 feet. Elsewhere, mostly
lighter totals around a couple inches are forecast for lower
elevation/valley locations and 4-8 inches, locally up to a foot, at higher
terrain elevations. One exception to the lighter lower elevation totals
will be in the High Plains of Wyoming and Nebraska Monday where a few
inches of snow are possible. In addition to the chance for snow, winds
mixing down from the upper-level energy moving in as well as a
strengthening surface pressure gradient will lead to strong, gusty
downslope winds for portions of the High Plains on Sunday. High Wind
Watches are in effect for portions of the Rockies and adjacent High Plains
in Montana and Wyoming as sustained winds of 35-45 mph are forecast with
gusts as high as 75 mph possible. Temperatures throughout the West will
steadily decrease through Monday as a cold front moves through, with
notably frigid highs in the teens and 20s forecast for portions of the
Northern Great Basin, Rockies, and High Plains on Monday.

Between the storm systems moving through the East and the West, conditions
will be mostly dry over the Central/Northern Plains and Upper Midwest with
a bit of a roller coaster temperature wise. Unseasonably warm temperatures
as high as the upper 50s to low 60s today will drop into the 30s and 40s
behind a cold front Sunday before rising back into the 40s and 50s on
Monday.

Putnam

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