Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Thu Jun 26 2025 Valid 00Z Fri Jun 27 2025 - 00Z Sun Jun 29 2025 ...Prolonged and intense heat wave continues into Friday from Midwest to Mid-Atlantic... ...Unsettled weather could produce severe weather and excessive rainfall for parts of the Central and Eastern U.S... Approximately 80 million people remain under a heat headline this afternoon as our prolonged heat wave continues for one more day across the Mid-Atlantic, Ohio Valley, and Southeast. Within this broad area, the Ohio Valley (along a Pittsburgh to Louisville line) is still expected to experience Extreme to Major heat impacts. Fortunately, relief is on the way by tomorrow evening as the ridge flattens and a strong back-door cold front seeps southwestward across the northern Mid-Atlantic. Behind the back-door front, high temperatures in the low to mid 70's in the Northeast and northern Mid-Atlantic should feel gorgeous in comparison to the recent triple digit highs before the front quickly weakens on Saturday. By this weekend, high temperatures in the upper-80's and low 90's should encompass much of the region, which is much closer to normal for late June. As is typical of June, widespread thunderstorm coverage can be found across much of the Central and Eastern Lower 48, generally focusing along a slow moving frontal boundary. Some of the organized storms in the Midwest, Mid-Atlantic, and Appalachians today could produce scattered instances of flash flooding and severe weather per the latest WPC and SPC forecasts. By tomorrow, two distinct low pressure areas will split the threat of scattered flash flooding and severe weather into the interior Northeast and Northern Plains, respectively. Asherman/Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php