Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 306 AM EST Mon Nov 30 2020 Valid 12Z Mon Nov 30 2020 - 12Z Wed Dec 02 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 and the central/southern Appalachians with heavy snow likely downwind from the lower Great Lakes... ...Elevated Fire Weather Risk for parts of southern California and northern High Plains... A developing low pressure system will bring widespread inclement weather across the eastern U.S. through Tuesday. The center of this system is forecast to track rapidly up the spine of the Appalachians today as rain well ahead of the storm center spreads northward through the entire eastern U.S. The system will get stronger and expand in size through tonight, leading to increasingly blustery winds with embedded heavy rain reaching New England by tonight. In addition, severe thunderstorms are possible across parts of the Southeast and along the Mid-Atlantic coast ahead of a strong cold front. Meanwhile, the large circulation of the storm will draw colder air across the Great Lakes toward the Ohio Valley today, changing the rain into wintry precipitation in these areas. Accumulating snow is expected to last into much of Tuesday across the lower Great Lakes to the Ohio Valley with heavy snow likely downwind of Lake Erie as the storm becomes slow-moving across of the Northeast Tuesday night. The snow is forecast to reach as far south as the higher elevations of the southern Appalachians under a cold and blustery northwesterly winds in the wake of the storm. Moisture associated with another Pacific frontal system will continue to bring rain and wind near the coast of the Pacific Northwest and mountain snow farther inland. Some of the snow should reach the northern and central Rockies on Tuesday. By early Wednesday, return moisture from the western Gulf of Mexico should bring rain into the southern Plains while interacting with an upper-level trough dipping down the Rockies. Finally, elevated fire risk is expected across the high elevations of southern California and parts of the northern High Plains, due to dry and windy conditions. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php