


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
562 FXUS01 KWBC 012001 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 PM EDT Mon Sep 01 2025 Valid 00Z Tue Sep 02 2025 - 00Z Thu Sep 04 2025 ...Unsettled weather across portions of the central Plains, Tennessee Valley and along the Gulf Coast from Florida through southern Texas, with locally heavy rain and isolated flash flooding possible... ...Strong cold front to bring a notably colder airmass into the north-central U.S. beginning late Tuesday into Wednesday... ...Hot weather remains across the western U.S. with the Pacific Northwest carrying potential for record-breaking high temperatures... A stalled frontal boundary from Florida into southern Texas will keep scattered showers and thunderstorms in the forecast for the Gulf Coast region, especially Florida, over the next day or two. Localized flash flood potential will remain across Texas through early Tuesday morning but locally heavy rain will continue for the Florida Peninsula into Wednesday. Broad upper level troughing and weak disturbances in the flow aloft will also keep areas of showers and thunderstorms across portions of Nebraska, Kansas and Oklahoma through early Tuesday while the threat for heavy rain shifts/expands into portions of the Tennessee Valley. Any flash flooding is expected to be localized to widely scattered but spotty 2 to 4 inch totals may result in localized runoff. Near to below average temperatures will linger for many east of the Rockies through mid-week, but a strong cold front is forecast to reach the north-central U.S. on Tuesday. Showers and thunderstorms are expected with the front into the Upper Mississippi Valley on Tuesday, expanding east and south along the front for Wednesday. In the wake of the cold front, high temperatures are only forecast to be in the 50s to 60s from the Dakotas into northern Minnesota and Wisconsin on Wednesday, roughly 15 to 25 degrees below early September averages. Meanwhile, many locations west of the Rockies will remain hot over the next couple of days, especially across the Pacific Northwest. Extreme Heat Warnings and Heat Advisories are in effect for portions of the Columbia Basin into northwestern Montana into Wednesday. High temperatures may break 100 degrees for some folks in northern Oregon and eastern Washington. Farther south, monsoonal moisture will return across portions of the Southwest and Four Corners over the next few days, bringing an increasing chance for showers and thunderstorms. Otto Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$