591 FXUS01 KWBC 220801 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 AM EDT Mon Jun 22 2026 Valid 12Z Mon Jun 22 2026 - 12Z Wed Jun 24 2026 ...Scattered heavy rainfall and severe weather possible today, stretching from the Northeast to the High Plains; unsettled weather continues in the Central U.S. through midweek... ...First few days of summer to bring much above average temperatures across the West Coast, Great Basin, Southwest, Rockies and along the Gulf coast and Southeast; Cooler than average temperatures on tap for the Northern/Central Plains, Great Lakes and into the Northeast... An active pattern for heavy rainfall and severe weather will continue through the first week of Summer as two frontal systems migrate across the Central and Eastern U.S. over the next 48 hours. For today, the threat of scattered heavy rainfall and severe weather later this afternoon will stretch from New York to Wyoming ahead of a cold front as it taps into a very moist and unstable airmass drawn northward. Much of the activity in the east should erode an eventual frontal passage tonight, although the threat may continue into the overnight hours in the Plains and Mississippi Valley as storms congeal into organized complexes. The passage of the cold front will end the threat of organized severe storms and heavy rainfall in the Eastern U.S. by tomorrow, though unsettled weather will linger in the Heartland through midweek with daily chances of scattered flash flooding and severe weather. The first full days of Summer 2026 will bring much above average temperatures to all of the western U.S. from the West coast, through the Great Basin, Southwest and Rockies, extending eastward across Texas, the Gulf Coast, Southeast and Florida. The hottest temperatures over 100 degrees expected from West and Southwest Texas, into the Southwest and interior California Valleys, while low to mid 90s expected elsewhere across the above mentioned regions. Heat advisories remain in effect across the Pacific Northwest and Southern Plains, affecting over 21 million people. In contrast, cooler than average temperatures are expected to stretch across the Northern and Central Plains, Great Lakes and into the Northeast over the next few days. Asherman/Oravec Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$