Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
233 PM EST Tue Jan 02 2024

Valid 00Z Wed Jan 03 2024 - 00Z Fri Jan 05 2024

...Moderate to locally heavy snow over the Sierra Nevada Mountains...

...Higher elevation snow for the Pacific Northwest and the Great
Basin/Central/Southern Rockies...

...Lake-enhanced and lake-effect snow downwind from the Great Lakes...

A weak upper-level low over western Texas and North-Central Mexico will
move eastward to the Mid-Atlantic Coast by Thursday evening. The
circulation around the upper-level low will draw moisture from the Gulf of
Mexico, producing rain with embedded thunderstorms on Tuesday evening into
Wednesday morning. Low pressure will develop along the Western/Central
Gulf Coast overnight Tuesday into Wednesday morning. The rain and embedded
thunderstorms will move into the Lower Mississippi Valley on Wednesday and
into the Eastern Gulf Coast/Southeast by Wednesday evening. Rain will be
along parts of the Mid-Atlantic/Southeast Coast by Thursday.

Meanwhile, a front moves onshore over the Pacific Northwest overnight
Tuesday and moves to the Southwest by Wednesday evening before moving to
the Southern High Plains on Thursday. Late afternoon Tuesday, the system
will produce rain and higher-elevation snow over parts of the Pacific
Northwest and Northern California. Overnight Tuesday into Wednesday, the
rain will move into Southern California and moderate to locally heavy snow
will develop over the Sierra Nevada Mountains, ending overnight Wednesday.
On Wednesday, the snow will develop over parts of the Great Basin. Rain
and higher elevation snow moves into the Southwest by Wednesday evening
and the Central/Southern Rockies on Thursday. Rain and snow will move into
parts of the Southern High Plains by Thursday evening.

Moreover, a front extending from the Upper Great Lakes into the Northern
Plains/Northern High Plains will move into the Lower Great Lakes/Ohio
Valley by Wednesday evening and then into the Northeast Coast on Thursday.
On Wednesday, the lake-effect/lake-enhanced snow develops over the Upper
Great Lakes and the Lower Great Lakes by Wednesday evening. Likewise,
upslope snow will develop over parts of the Central Appalachians on
Wednesday evening into Thursday as snow moves into Northern New England.

Furthermore, another front will move onshore over the Pacific Northwest on
Thursday. Rain and higher-elevation snow will continue over the region on
Thursday.


Ziegenfelder


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