Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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836 FXUS01 KWBC 100801 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 AM EST Mon Nov 10 2025 Valid 12Z Mon Nov 10 2025 - 12Z Wed Nov 12 2025 ...Frigid airmass brings sharply colder weather across the eastern two-thirds of the country and record maximum and minimum temperatures in the Southeast including all of Florida through tonight... ...Snowy, very cold and windy from the Great Lakes to interior New England and west slopes of the Appalachians... A closed upper low over the Ohio Valley/Upper Midwest will tilt negatively as it shifts through the Northeast and into southeastern Canada by Wednesday morning. At the surface, a frigid continental polar airmass will continue to stream south through the Central and Eastern U.S. behind an associated polar front. Max and min temperatures between 20-30 degrees below average will tie or break many records across the Southeast through tonight. Record breaking maximum temperatures are also possible for much of the Florida peninsula on Tuesday as well as the polar airmass continues its southward progression. Freeze watches and warnings are in effect from the Lower Mississippi Valley to the Virginia Tidewater through Tuesday morning. Surface high pressure will dive south across the Plains today, while a compact pressure gradient across the Mississippi Valley, Midwest and Southeast will generate gusty winds and dry conditions. This will support an elevated fire weather threat across the Central Gulf Coast, where red flag warnings are in effect today and for much of the Southern Plains on Tuesday. Surface troughing and northerly flow supplying cold air across the Midwest and interior Northeast will generate snowfall for portions of the Great Lakes and Appalachians today, where an additional 4-8" are expected with isolated higher amounts possible by Wednesday morning. Lake effect snow warnings are in effect downwind of Lake Erie, while winter weather advisories and winter storm warnings dot downwind areas of the Great Lakes, northern Maine and the Central/Southern Appalachians. Elsewhere, an amplified upper low pressure system will bring unsettled weather to the West beginning on Wednesday. Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$