306 FXUS01 KWBC 241952 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 349 PM EDT Tue Mar 24 2026 Valid 00Z Wed Mar 25 2026 - 00Z Fri Mar 27 2026 ...Record-breaking heat expected in the Central and Western U.S. for the next several days... ...Rain with a possibility of wintry precipitation set to briefly return to the Northern Rockies on Thursday... ...Strong to severe thunderstorms expected in the Mid-Mississippi and Ohio Valleys on Thursday... Temperatures will continue to rise substantially across the western and central U.S. over the next couple of days as a potent upper-level ridge remains in place over the Southwest. The ridge will then propagate eastward through the rest of the week, reaching the Southern and Central Plains on Wednesday, and the southeast to end the week. As this heat wave develops and continues, multiple days of record-breaking temperatures are expected, particularly in the Southwest and much the Plains. Temperatures will exceed 100 degrees in the Southwest, and widespread temperatures above 90 degrees are expected throughout the Central and Southern Plains. In the Southeast, temperatures will approach and possibly exceed the 90 degree threshold to end the week. More active weather is expected for much of the northern portion of the country on Thursday, particularly in the Northern Rockies/Intermountain West, and the Mid-Mississippi/Ohio Valleys. In a rather drastic change from earlier in the week, cooler conditions are forecast to return in the Northern Rockies, as a cold front moves in from the Pacific. This frontal system is currently forecast to bring precipitation in the form of rain, along with a possibility of mixed precipitation. Light snowfall is also expected in the mountains along the Northern Rockies and parts of the Great Basin. Meanwhile in the Mississippi and Ohio Valleys, a strong and well-defined cold front will move in from the north beginning on Wednesday night. Thunderstorms will develop to the southeast of the front on Thursday, and will continue through the evening and overnight hours as it moves southeastward. Along with thunderstorms, strong winds are expected, and a hail and tornado threat could also emerge. As such, the Storm Prediction Center has issued a Slight Risk (level 2/5) of severe weather for much of the Mid-Mississippi and Ohio Valleys on Thursday. Elsewhere, a critical risk of fire is expected for much of Wyoming on Wednesday, with much of the surrounding areas under an elevated risk. Low humidity and strong winds off the back of the aforementioned cold front could cause erratic fire weather, with conditions possibly continuing into Thursday. Blanco-Alcala Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$