Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
318 AM EST Mon Nov 17 2025

Valid 12Z Mon Nov 17 2025 - 12Z Wed Nov 19 2025

...Heavy snow over the Sierra Nevada Mountains on Monday...

...Lake effect snow downwind from Lakes Erie and Ontario on Monday...

...Upslope snow over the Northeast on Monday...

Developing upper-level low along the California Coast moves southward to
Northwestern Mexico by Wednesday. The system will produce rain along the
West Coast and embedded thunderstorms over Central California, mainly
through early Tuesday morning. Heavy snow will develop over the Sierra
Nevada Mountains, mostly on Monday. Rain and higher-elevation light snow
are expected to generate over parts of the Pacific Northwest on Tuesday
morning, tapering off by Wednesday. Overnight on Monday, showers and
thunderstorms, along with high-elevation snow, will develop over parts of
the Southwest, continuing through Wednesday morning.

Low pressure over the Central Rockies will move eastward to the southern
Ohio Valley by Tuesday night into Wednesday. The system will produce
higher-elevation snow and lower-elevation rain over parts of the Great
Basin/Central Rockies from Monday into late Monday night.  Scattered
showers and thunderstorms will develop over parts of the Northern/Central
Plains, expanding into the Middle/Lower Mississippi Valley by Monday
evening.  By Tuesday morning, light snow will develop along the northern
edge of the precipitation shield over parts of the Upper Mississippi
Valley/Great Lakes into parts of the Ohio Valley. Rain and a few embedded
thunderstorms will develop over parts of the Ohio Valley on Tuesday,
tapering off by Wednesday. In addition, rain will move into the Central
Appalachians and Mid-Atlantic on Tuesday afternoon, continuing into
Wednesday.

Elsewhere, an upper-level low over the Northeast will aid in producing
lake-effect snow downwind of Lakes Erie and Ontario, which is expected to
end overnight on Monday. Snow will develop over parts of northeastern New
York State and the Northeastern Mountains, slowly tapering off overnight
Tuesday. Furthermore, onshore flow will aid in producing scattered showers
over southeast-central Florida overnight Monday into Wednesday. 


Ziegenfelder


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