Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 258 PM EST Mon Mar 02 2020 Valid 00Z Tue Mar 03 2020 - 00Z Thu Mar 05 2020 ...There is a slight risk of severe thunderstorms over parts of the Tennessee, Ohio, and Lower Mississippi Valley... ...There are multiple areas of a slight risk of excessive rainfall over the Southern tier states into Tuesday and Wednesday morning... ...Heavy snow over parts of Northern New England Tuesday night into Wednesday and snow over the Cascades and Northern Rockies... Multiple fronts tracking across the eastern half of the U.S. will make for a wet start to the week from the Southern tier states and Ohio Valley to the Northeast. Parts of the Tennessee Valley and Southern Appalachians can expect over one inch of rain with lesser amounts in the Lower Great Lakes and Northeast. Some precipitation will fall in the form of a wintry mix this afternoon and evening in Northern New England. Severe storms and localized areas of flash flooding are also possible in the Tennessee, Ohio, and Lower Mississippi Valley. By Tuesday, the cold front will slow down as it approaches the Appalachians and a wave of low pressure will track northeast along the boundary. This will lead to another round of showers up and down the East Coast with a chance of a few thunderstorms in the Southeast. A Slight Risk for flash flooding has been issued for parts of the Southeast on Tuesday. Overnight Tuesday into Wednesday evening snow, heavy at times, will develop over parts of Northern New England, as low pressure move across the region. Farther west, the headliner of the week will be a highly anomalous upper trough passing over the Southwest U.S. and northwest Mexico on Monday. This trough will tap into moisture from both the subtropical Pacific and Gulf of Mexico, which in turn will force showers and thunderstorms to flourish over the Southern Plains on Tuesday and into Tuesday night. Portions of Texas will be at risk for both severe weather and flash flooding Tuesday evening. Some locations in west Texas could see rainfall totals over one inch Tuesday. Widespread showers and storms will then spread east into the Southeast by Wednesday where the threat for flash flooding and severe weather will also be present. From Monday into Wednesday heavy rain is forecast to be a along the Gulf Coast with parts of Mississippi, Alabama, and Georgia receiving between 2 to 5 inches of rain. Elsewhere, the Pacific Northwest to Northern Rockies should see rounds of precipitation the Monday evening into Wednesday evening as a couple of upper-level impulses pass through. Higher elevations of the Cascades and Rockies can expect over a foot of snow through Tuesday. The Upper Midwest and Upper Great Lakes could see some light snow by Tuesday with a low pressure system passing through Canada. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php