Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 AM EDT Sat Sep 13 2025 Valid 12Z Sat Sep 13 2025 - 12Z Mon Sep 15 2025 ...Rounds of thunderstorms continue over the Southern Rockies, High Plains, and South Florida; scattered flash flooding and severe weather possible... ...Relatively cool temperatures anticipated this weekend west of the Continental Divide; warmer than normal weather from the central U.S. to the Northeast... Portions of the Southern Rockies, High Plains, and South Florida continue to be a focus for showers and thunderstorms on either side of an upper-level omega-blocking pattern over the mid-section of the country. Farther west, scattered flash flooding, hail, and severe wind remain possible today from the Four Corners to the northern High Plains as thunderstorms expand in coverage downstream of an amplified upper-trough. By Sunday, the approach of the upper-trough and a developing cold front should shift the heavy rain and severe weather threat eastward into the northern and southern High Plains, with a similar coverage of impacts expected. Meanwhile, in the East, isolated to scattered urban flash flood potential will persist across South Florida through Sunday with storms expected near a front that has stalled to the south of the Florida Peninsula. With the advance of the aforementioned upper-trough and cold front, relatively cool temperatures are forecast across the Intermountain West this weekend with daytime highs 10-15 degrees below normal (generally in the 70's-80's). In stark contrast to the West, much of the Midwest will see warm, above-average temperatures reaching into the mid-upper 90's during the afternoon this weekend. The latest experimental HeatRisk guidance suggests that this hot weather could possibly impact anyone without access to cooling or hydration on Saturday and Sunday. Looking beyond the weekend, warm temperatures will persist across the Central U.S., although as of now heat impacts beyond will generally remain limited to those sensitive to heat. Over the Pacific Northwest, the next round of rain, possibly with some emedded thunderstorms, is forecast to arrive on Sunday. The associated cold front and upper trough will push farther inland Sunday night, bringing the rain across northern Idaho into western Montana by Monday morning. Kong/Asherman Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php