Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 356 PM EDT Sat Jun 20 2020 Valid 00Z Sun Jun 21 2020 - 00Z Tue Jun 23 2020 ...Severe weather and flash flooding are possible with storms in the Plains for the next couple days... ...Scattered showers and thunderstorms are forecast for the East... ...Hot temperatures continue for the Northeast... As moisture flows into the vicinity of a couple frontal boundaries and ahead of a dryline, the Plains and portions of the Mississippi Valley can expect scattered thunderstorms through the beginning of next week. Through tonight, Slight Risks of severe weather are outlooked by the Storm Prediction Center for parts of the Plains. Isolated higher rainfall totals causing flash flooding are possible, especially for portions of southern Oklahoma and far northern Texas. On Sunday and Monday, the Storm Prediction Center again has Slight to Enhanced Risk of severe weather in place for the Central/Southern Plains into the Middle Mississippi Valley. With a couple of inches of rain possible each day, Slight Risks of flash flooding are delineated mainly for parts of Oklahoma as well. Farther east, unsettled weather is also expected for the Ohio and Tennessee Valleys toward the Eastern Seaboard, with scattered thunderstorms forecast. Widespread severe weather or flash flooding are not likely in those areas, though through tonight the Carolina/Georgia coast could see a few strong storms, and isolated instances of flash flooding are possible in the Mid-Atlantic. Rain and thunderstorm chances should increase across the Midwest to Great Lakes region on Monday ahead of a low pressure system. Elsewhere, a front moving through the Northwest could trigger showers and isolated thunderstorms through tonight, drying out on Sunday. The most anomalous temperature departures from normal over the next few days are forecast for the Northeast, where highs nearing or even exceeding 90 degrees are again possible. Heat is forecast to build into California and the Great Basin Sunday and especially Monday, with hot temperatures expected for the Southern High Plains as well. The coolest temperatures should be seen across the north-central U.S. Tate Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php