####018004706#### FXUS01 KWBC 010801 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 401 AM EDT Mon Apr 01 2024 Valid 12Z Mon Apr 01 2024 - 12Z Wed Apr 03 2024 ...There is an Enhanced Risk of severe thunderstorms over parts of the Southern Plains, Middle Mississippi, and Ohio Valleys on Monday and over parts of the Ohio/Tennessee Valleys on Tuesday... ...There is a Sight Risk of excessive rainfall over parts of over parts of the Middle Mississippi and Ohio Valleys on Monday and over Eastern Ohio, Tennessee Valleys and Central Appalachians on Tuesday... ...Snow winds down over parts of the higher elevations of Wyoming, Nevada, Colorado, Utah, and Arizona on Monday; light to moderate snow over the northern half of the L.P. of Michigan on Tuesday... A stationary front extending from the Mid-Atlantic to the Central Plains will be quasi-stationary through Tuesday morning. From the low on the western end of the stationary front, a cold front extends from the Central Plains to the Southern High Plains that will move eastward to the Lower Great Lakes, the Appalachians, and the Eastern Gulf Coast by Wednesday. Moisture from the Western Gulf of Mexico will pool along the boundary, creating showers and severe thunderstorms over parts of the Middle Mississippi Valley and Central/Southern Plains. Therefore, the SPC has issued an Enhanced Risk (level 3/5) of severe thunderstorms over parts of the Middle Mississippi Valley, Central/Southern Plains through Tuesday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Besides, there is an increased threat of EF2 to EF5 tornados over parts of the Southern Plains and Middle Mississippi Valley. In addition, there is an increased threat of hail two inches or greater in size over parts of the Central/Southern Plains/Middle Mississippi Valley. Farther east along the boundary, showers and thunderstorms will develop over parts of the Mid-Atlantic on Monday. Furthermore, the showers and thunderstorms will produce heavy rain over parts of the Middle Mississippi to the Central Appalachians. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Middle Mississippi, Ohio Valleys, and Central Appalachians through Tuesday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable. Likewise, showers and thunderstorms will extend into the Central Appalachian and Mid-Atlantic on Monday. On Tuesday, the threat of severe thunderstorms moves to parts of the Ohio/Tennessee Valleys. Therefore, the SPC has issued an Enhanced Risk (level 3/5) of severe thunderstorms over parts of the Ohio/Tennessee Valleys from Tuesday through Wednesday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Similarly, the showers and thunderstorms will produce heavy rain over parts of Eastern Ohio, Tennessee Valleys, and Central Appalachians. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of Eastern Ohio, Tennessee Valleys, and Central Appalachians from Tuesday through Wednesday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable. Meanwhile, on Monday, under the deep upper-level trough over the western third of the country, the snow over the higher elevations of Wyoming, Nevada, Colorado, Utah, and Arizona will start to wind down. Also, the rain at lower elevations over Utah, Arizona, and New Mexico will come to an end by Tuesday morning. Additionally, light to moderate snow will develop over parts of the Northern/Central Plains on Monday and end overnight on Monday. On Tuesday, the low pressure associated with the storm over the Middle Mississippi Valley on Monday will move into the Great Lakes by Wednesday morning. The counter-clockwise flow around the low will create snow over parts of the U.P. of Michigan, Wisconsin, and the northern half of the L.P. of Michigan from Tuesday afternoon into Wednesday. Further, rain and snow will move into parts of New England overnight Tuesday into Wednesday. The heaviest snow will be over the northern half of the L.P. of Michigan. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$