Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 352 PM EDT Tue Jul 21 2020 Valid 00Z Wed Jul 22 2020 - 00Z Fri Jul 24 2020 ...There is a slight risk of severe thunderstorms and a slight risk of excessive rainfall over parts of the Upper Midwest and parts of the Middle Mississippi and Western Ohio Valleys... ...There is a slight risk of excessive rainfall over parts of the Mid-Atlantic/Central Appalachians... ...There is a slight risk of severe thunderstorms over parts of the Central High Plains... ...There is a critical risk of wildfire over parts of the Southwest and Central Great Basin... A front over the Upper Midwest to the Central High Plains will move eastward to Northeast with the trailing boundary across Northern Mid-Atlantic/Central Appalachians westward to the Northern/Central Plains by Thursday evening. The SPC and the WPC have issued a slight risk of severe thunderstorms and excessive rainfall, respectively, over parts of the Upper Midwest and parts of the Middle Mississippi and Western Ohio Valleys. The main hazard with these storms are frequent lightning, damaging thunderstorm wind, and a few tornadoes through Wednesday morning. The heavy rain associated with the thunderstorms will produce mainly localized scattered flash flooding over parts of the area. In addition, weak upper-level energy and moisture rich air will aid in producing showers and thunderstorms over parts of the of the Mid-Atlantic into parts of the Central Appalachians. The WPC has issued a slight risk of excessive rainfall over the region. The heavy rain associated with the thunderstorms will produce mainly localized scattered flash flooding over parts of the region through Wednesday morning. Furthermore, upper-level energy will aid in producing showers and thunderstorms over parts of the Central High Plains through Wednesday morning. The SPC has issued slight risk of severe thunderstorms over parts of the Central High Plains. The main hazards associated with the severe thunderstorms are frequent lightning, damaging thunderstorm wind, hail, and a few tornadoes through Wednesday morning. Across the western U.S., above average heat will continue in Washington/Oregon into the Intermountain West on Tuesday. For Wednesday, highs in the mid-upper 90s are expected to shift east into the northern Rockies and High Plains but a cold front provides cooler weather to the Pacific Northwest for Wednesday. Along with the heat, SPC has issued a critical risk of wildfire over parts of the Southwest and Central Great Basin through Thursday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php