Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
258 PM EST Tue Dec 26 2023

Valid 00Z Wed Dec 27 2023 - 00Z Fri Dec 29 2023

...A significant winter storm will be winding down over the Midwest...

...There is a Slight Risk of excessive rainfall over parts of Southern
Appalachians...

...Light to moderate snow and areas of rain/freezing rain over the
Midwest...

The winter storm over the Midwest will slowly start winding down. Blizzard
Warnings will be ending later Tuesday evening. Furthermore, the storm will
also produce areas of light to moderate snow over parts of the
Northern/Central Plains and Middle Mississippi Valley overnight Tuesday
into Wednesday morning. In addition, an area of rain/freezing rain will
develop over parts of the Northern Plains into the Upper Mississippi
Valley.

Moreover, rain will extend from the Southeast northward into the Ohio
Valley/Great Lakes with embedded thunderstorms over parts of the
Southeast. Moisture will flow off the Atlantic and create areas of heavy
rain over parts of the Southern Appalachians. Therefore, the WPC has
issued a Slight Risk of excessive rainfall over parts of the Southern
Appalachians through Wednesday morning. The associated heavy rain will
create mainly localized areas of flash flooding, with urban areas, roads,
and small streams the most vulnerable.

On Wednesday, the storm will continue to wind down over the Midwest as
light snow continues over parts of the Midwest, Wednesday evening into
Thursday. In addition, the areas of rain/freezing rain will end over the
Northern Plains/Upper Mississippi Valley on Wednesday. Further, the threat
of excessive rainfall decreases slightly, with an area of Marginal Risk
over parts of the northern Mid-Atlantic Wednesday into Thursday morning.
Likewise, the rain from the Great Lakes to the Southeast moves eastward to
the Mid-Atlantic and Northeast. Light snow will develop over parts of
northern Maine, with a few pockets of rain/freezing rain overnight
Wednesday. Rain will continue over the Mid-Atlantic/Northeast on Thursday.
Scattered rain will develop over parts of the Midwest, including on
Thursday.

Meanwhile, a front over the Eastern Pacific moves onshore over the Pacific
Northwest later on Wednesday, slowly dissipating by Thursday. The system
will produce rain and highest elevation snow over the Pacific Northwest
and California through Thursday evening.


Ziegenfelder


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