Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 355 AM EDT Mon Apr 20 2020 Valid 12Z Mon Apr 20 2020 - 12Z Wed Apr 22 2020 ...Severe weather expected to continue this morning over eastern portions of the Southeast... As waves of low pressure along the front stretching across the Southeast begin to consolidate, they will move eastward into the Atlantic later today. Before then, thunderstorms are forecast to continue in the Southeast and southern portions of the Mid-Atlantic. Today, a Slight to Enhanced Risk of severe weather is forecast for coastal portions of Georgia and the Carolinas before storms move out to sea. A low pressure system sweeping through south-central and southeastern Canada over the next couple of days will sweep a cold front across the Midwest today and the Eastern Seaboard on Tuesday. Precipitation is forecast in the vicinity of the front, some in the form of snow. Another round of light accumulating snow is possible for the Great Lakes region to the interior Northeast. Farther south and east, thunderstorms are possible in portions of the Mid-Atlantic and Northeast on Tuesday, some of which could be strong to severe. This cold front and lower than normal upper-level heights should also lead to cooler than average temperatures; the Great Lakes can expect high temperatures of 15 to 25 degrees below normal on Tuesday. Meanwhile, a mix of light rain and snow is expected across parts of California, the Central Great Basin, and the Four Corners through Tuesday, as upper-level energy moves across and then into the Southern/Central High Plains. By Tuesday, thunderstorms are forecast to increase in coverage across the Plains--a Slight Risk of severe weather is in place for parts of the Southern Plains on Tuesday, with locally heavy rain causing a few instances of flash flooding possible there as well. Severe thunderstorms and heavy rain are expected for the Lower Mississippi Valley on Wednesday. While portions of the northern and eastern portions of the country will be colder than average, the Florida peninsula will once again be a hot spot, with possible record high temperatures. Warmer than average temperatures are also possible in southern portions of Texas and in the Northwest, spreading eastward to the Northern Plains Tuesday. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php