Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 314 AM EST Sun Nov 29 2020 Valid 12Z Sun Nov 29 2020 - 12Z Tue Dec 01 2020 ...Moderate to heavy rain will spread from the Deep South to the entire East Coast over the next couple of days with severe thunderstorms possible across the Southeast and the Mid-Atlantic coast... ...Accumulating snow expected for parts of the Ohio Valley into the central and southern Appalachians later on Monday into Tuesday... ...Elevated Fire Weather Risk continues in southern California... An intensifying low pressure system will take center stage across the Deep South for the remainder of this Thanksgiving weekend. Heavy rain and thunderstorms triggered along a stalled front will begin to expand eastward from the Texas coast to much of the lower Mississippi Valley today as the low pressure center develops in the northwestern Gulf of Mexico and moves toward the northeast. The low will then move onshore and spread moderate to heavy rain rapidly into the eastern U.S. on Monday as the system strengthens considerably and tracks along the Appalachians. Locally heavy rain and thunderstorms will also sweep across the Southeast and the Florida Peninsula on Monday ahead of a strong cold front where severe thunderstorms are possible. In addition, this system will draw colder air from Canada on its backside and bring accumulating snows for parts of the Ohio Valley into the central and southern Appalachians later on Monday into Tuesday. Meanwhile, the next wave of moisture is forecast to reach the Pacific Northwest later today well ahead of an approaching frontal system. Rain and wind will be on the increase near the coast while snow is forecast to reach into the interior mountains today and into Monday as the front arrives. By Tuesday morning, some of the snow should move into the central Rockies. The remainder of the West will remain relatively quiet for the next couple of days. Nevertheless, the fire risk will remain elevated for much of the Coastal Ranges of southern California through Monday under a continued dry and breezy wind from the north and northeast. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php