Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
235 AM EST Mon Dec 01 2025

Valid 12Z Mon Dec 01 2025 - 12Z Wed Dec 03 2025

...Monday will bring a messy wintry mix across the Ozarks/Mid-South into
the Ohio Valley with light to moderate snowfall for portions of the
Midwest/Lower Great Lakes...

...First winter storm of the season expected for New England and the
inland Mid-Atlantic late Monday into Tuesday with heavy snow and impactful
icing...

...Chilly temperatures continue across much of the eastern and central
U.S. in a winter-like pattern...

A few lingering snow showers will continue into Monday morning across
portions of the Great Lakes and interior Northeast as an
upper-wave/surface frontal system responsible for this past weekend's
winter storm lifts into southeastern Canada. Meanwhile, to the west, the
next impactful storm system will begin to take shape as an upper-wave over
the Rockies emerges over the Plains, encouraging moist return flow along
and overriding a quasi-stationary frontal boundary in place along the Gulf
Coast. A broad, expanding area of precipitation will shift eastward from
the Plains/Mississippi Valley this morning into the Midwest and Southeast
this afternoon and evening. Scattered to widespread showers and
thunderstorms are expected closer to the boundary along the Gulf Coast and
inland over portions of the Southeast. Some moderate to locally heavy
rainfall will be possible, with an isolated risk for flash flooding. With
colder air in place further north, the precipitation will first transition
into a messy wintry mix from the Ozarks/Mid-South east through the Ohio
Valley, with snow and ice leading to hazardous travel conditions. A
broadening swath of accumulating snow is forecast just to the north,
stretching from the central Plains east through the Middle Mississippi
Valley and into the Upper Ohio Valley/Lower Great Lakes. Some light to
moderate accumulations can be expected, with locally higher totals where
snowfall will be enhanced downwind of the Great Lakes.

As the upper-wave continues eastward, it will help to deepen/organize an
area of low pressure along the Gulf Coast frontal boundary through the day
Monday, expected to lift northeastward and strengthen along the East Coast
late Monday and through the day Tuesday. Moist onshore flow in the colder
air north of the system will help to enhance winter precipitation across
much of New England and the Mid-Atlantic, especially inland from the
coast, bringing the first impactful winter storm of the season. Although
uncertainty remains with respect to specific totals, the threat for
significant snow accumulations across the interior is rising, with more
than 6" possible north and west of the I-95 corridor. In addition,
treacherous icing is expected further south along portions of the
central/southern Appalachians.

Yet another system upstream will drop into the Pacific Northwest/northern
Rockies by later Monday bringing lower elevation/coastal rain and
inland/higher elevation snow. Snow showers will spread southward over the
Great Basin/central Rockies by Tuesday morning. Some moderate snow
accumulations are expected but should be limited to the regional mountain
ranges. Just to the northeast, an additional quick moving clipper-like
system will bring some light snow showers to the northern Plains Tuesday,
and some more moderate snowfall across the Upper Great Lakes Tuesday
night.

Temperatures remain well-below average and very chilly across much of the
eastern and central U.S. as this winter-like pattern continues, featuring
broad, stagnant upper-toughing and repeated cold frontal passages.
Forecast highs the next couple of days generally range from the teens and
20s across the northern Plains/Midwest; the 30s and 40s for the central
Plains, Ohio valley, and Northeast/Mid-Atlantic; and the 40s and 50s from
Texas into the Southeast. Areas along the Gulf Coast Monday and into the
southeast Atlantic Tuesday south of the frontal boundary will see much
warmer highs into the 60s. Downsloping winds off the Rockies will also
bring a warm up to the High Plains on Tuesday as temperatures rise into
the 30s/40s north and 50s/60s south. Conditions remain closer to average
across the West, with highs in the 40s for the interior, 50s and 60s along
the West Coast, and 60s and 70s in the Desert Southwest.

Putnam

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