Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 405 AM EDT Wed Apr 29 2020 Valid 12Z Wed Apr 29 2020 - 12Z Fri May 01 2020 ...There is a slight risk of severe thunderstorms over parts of the Central/Eastern Gulf Coast... ...There is a slight risk of excessive rainfall over parts of the Central/Southern Appalachians... ...Temperatures will be 10 to 20 degrees above average over parts of the Southwest, Great Basin, and parts of the Rockies... A storm over the Midwest will produce widespread showers and thunderstorms, including a likelihood of severe weather, over parts of the Central/Eastern Gulf Coast. In addition to the severe weather hazards, there will be heavy rainfall and some concerns for flash flooding over parts of the Central/Southern Appalachians. In fact, the Weather Prediction Center has highlighted a Slight Risk of excessive rainfall for parts of the Central/Southern Appalachians. The aforementioned storm system will be moving into the eastern U.S. by Friday as low pressure advances into the Great Lakes region. This will drive a cold front eastward from the Midwest to the Ohio and Tennessee Valleys, and across the Gulf Coast. Meanwhile, much above normal temperatures will continue over the Desert Southwest and Great Basin as a strong ridge of high pressure continues to dominate the weather here at least through midweek. Temperatures will be as much as 10 to 20 degrees above normal, and that will allow some of the interior deserts of the Southwest to again exceed 100 degrees. By Thursday, some of this very warm air will begin to shift eastward and should begin to advance out across the High Plains as the ridge shifts eastward in response to an upper trough approaching the West Coast. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php