Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 352 AM EDT Sat May 04 2019 Valid 12Z Sat May 04 2019 - 12Z Mon May 06 2019 ...Thunderstorms that could be severe and cause flash flooding are expected across the central and eastern U.S. today... ...Severe weather is also possible in the Southern/Central High Plains on Saturday... A front will slowly make its way across central and eastern parts of the U.S. this weekend, bringing widespread rain and potentially severe thunderstorms with it. The highest likelihood for severe thunderstorms will be from the Central Gulf Coast into parts of the Southeast and Carolinas, where there is a Slight Risk of severe weather in place from the Storm Prediction Center. There is also a Slight Risk of excessive rainfall today, where heavy rain could cause flash flooding across the Lower Mississippi Valley as well as parts of the Ohio Valley and Mid-Atlantic region. On Sunday, rain should be confined to the Eastern Seaboard as the front pushing east will help clear out the moisture in the Central Gulf Coast states and the Tennessee/Ohio Valleys. Warm temperatures are expected in the Southeast, Carolinas, and Mid-Atlantic ahead of the front, especially for overnight lows--several record high minimum temperatures could be set on Saturday and Sunday morning. As a dryline develops in the Central/Southern High Plains and some weak upper-level energy comes in, scattered severe thunderstorms are possible there. A Slight Risk of severe thunderstorms is in effect on Saturday for eastern New Mexico, portions of the Texas and Oklahoma Panhandles, and far southeastern Colorado and southwestern Kansas. Some strong storms are again possible on Sunday across the Plains into the Middle Mississippi Valley. A potent cold front will move southward through the Northern/Central Plains and Upper Midwest this weekend, bringing cooler temperatures; high temperatures in the Northern Plains are forecast to be 10 to 20 degrees below average. Scattered showers are expected along the front, and the temperatures behind the front will be cold enough to support snow in the Northern Rockies and Northern High Plains. Through Sunday night, the higher elevations of the Northern Rockies could see 6 to 10 inches of snow, with 1 to 4 inches in lower elevations. In the West, warmer than average and generally dry conditions are expected on Saturday. A low will approach on Sunday, and moisture will increase ahead of it, causing scattered showers and thunderstorms for California and the Central Great Basin. Temperatures are expected to fall to 10 to 15 degrees below average on Sunday also due to the low. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php