


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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596 FXUS01 KWBC 221914 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 314 PM EDT Thu May 22 2025 Valid 00Z Fri May 23 2025 - 00Z Sun May 25 2025 ...Severe weather and heavy rain threat migrates into the Heartland today; rainy in the Northeast... ...Above average temperatures across southern tier states and West; unusually cool weather persists from Northern Plains to Northeast/Mid-Atlantic... A relatively stagnant upper pattern with troughing along the coasts and ridging over the Central U.S. will persist through the end of the week, with cool and rainy weather forecast from the Ohio Valley to the Northeast/Mid-Atlantic. Along the trailing end of the front, isolated to scattered severe storms (some of which could produce intense hail and wind) and heavy rainfall remain possible in the Southern Plains today. Looking ahead through the first half of Memorial Day weekend (Saturday evening), the threat of scattered severe and excessive rainfall is expected to focus across this portion of the front as it slowly lifts into the Ozarks and Central High Plains while a dryline sharpens. Storms aside, the aforementioned upper-troughing over Great Lakes and Northeast will facilitate cooler temperatures across the Northern Plains, Midwest, Northeast and Mid-Atlantic through Saturday. High temperatures in the 40s, 50s and low 60s will represent temperature anomalies between 20-35 degrees below average. Widespread low daily max temperature records may be tied or broken from the Ohio Valley to the Northeast/Mid-Atlantic today and tomorrow. In stark contrast to the cool conditions over the Northeast, warm weather (daytime highs 10-15 degrees above average) will continue across the Southern and Western U.S. Over portions of South and West Texas, daytime highs creeping into the triple digits may translate to Moderate to locally Major HeatRisk impacts through Saturday. Asherman/Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$