


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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550 FXUS01 KWBC 071932 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 331 PM EDT Tue Oct 07 2025 Valid 00Z Wed Oct 08 2025 - 00Z Fri Oct 10 2025 ...Heavy rain may cause flash flooding over the Ohio Valley/central Appalachians today into tonight... ...Threat for scattered flash flooding for portions of New Mexico today... ...Moisture from Priscilla will bring increasing thunderstorm chances to the Southwest/Four Corners region Thursday with at least an isolated threat for flash flooding... Showers and storms are expected to continue through this afternoon and into the evening along a cold front stretching from the Interior Northeast southwest through the Lower Great Lakes/central Appalachians into the Ohio/Tennessee Valleys. High moisture values will contribute to locally heavy rainfall, and a more widespread cluster of storms over portions of the Ohio Valley has prompted a Slight Risk of Excessive Rainfall (level 2/4) for the threat of some scattered flash flooding. The progressive nature of the front should keep the flash flood threat isolated elsewhere. The front will continue eastward during the overnight hours, bringing thunderstorms to the coastal Northeast by Wednesday morning and the Carolinas/Southeast into Wednesday afternoon. The front will clear the East Coast by Thursday with storm chances limited to portions of northern Florida and the Gulf Coast. Daily thunderstorms can be expected across central and especially South Florida as well. To the west, very moist, post-frontal upslope flow along the southern Rockies will lead to thunderstorms and locally heavy rainfall across portions of eastern New Mexico today. A Slight Risk of Excessive Rainfall is in effect for some scattered flash flooding especially for more terrain sensitive areas like burn scars. Storms chances will shift a bit westward further into the southern Rockies and Southwest with the lingering frontal boundary on Wednesday, with a continued risk of some locally heavy rainfall and isolated flash flooding. Then, on Thursday, moisture from Priscilla in the Pacific is forecast to spread into the Southwest/Four Corners region bringing increasingly widespread thunderstorms. At least an isolated threat for flash flooding will exist, with this threat expected to continue into the weekend. Elsewhere in the West, shower chances will spread inland Wednesday into Thursday across the Pacific Northwest ahead of an incoming frontal system, with the chance some snow may mix in for some of the higher mountain peaks. Tuesday is bringing another round of well above average temperatures to the East Coast, especially into New England, where highs into the low 80s may approach daily record levels for some locations. The aforementioned cold front will bring much cooler, Fall temperatures Wednesday-Thursday, with highs in the 50s for much of the Northeast and 60s as far south as Georgia. Temperatures will also briefly fall below average for the Midwest Wednesday, with morning lows in 20s and 30s prompting Frost and Freeze-related Advisories across the Upper Midwest. Meanwhile, in the central part of the country, a warm up is expected over the next couple of days as temperatures moderate following the passage of the cold front. Highs into the 70s to low 80s over the northern/central Plains Wednesday-Thursday are upwards of 10-20 degrees above average, with above average highs into the 80s and low 90s across the southern Plains/Texas. Warmer than average temperatures will spread into the Interior West as well, with highs mainly in the 70s, while the West Coast will see a cool down following the passage of a cold front, with highs falling to the 60s and 70s. Putnam Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$