


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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439 FXUS01 KWBC 061952 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 351 PM EDT Mon Oct 06 2025 Valid 00Z Tue Oct 07 2025 - 00Z Thu Oct 09 2025 ...There is a Slight Risk of excessive rainfall over parts of the Ohio Valley and Middle/Lower Mississippi Valley through Tuesday morning... ...There is a Slight Risk of excessive rainfall over parts of the Ohio Valley and Central Appalachians on Tuesday... A front extending from the Great Lakes to the Texas Panhandle will move eastward off the Northeast and Mid-Atlantic Coast and across the Southeast Coast to the Gulf Coast by Wednesday evening. Moisture streaming northward from the Gulf will intersect the boundary over the Ohio Valley and Middle/Lower Mississippi Valley, producing showers and thunderstorms with heavy rain. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Ohio Valley and Middle/Lower Mississippi Valley through Tuesday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas being the most vulnerable. In addition, showers and thunderstorms will extend along the front into the Great Lakes and over parts of the Central/Southern Plains through Tuesday morning. On Tuesday, as the front moves eastward, showers and thunderstorms with heavy rain will also move eastward to the Ohio Valley and Central Appalachians. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Ohio Valley and Central Appalachians from Tuesday through Wednesday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas being the most vulnerable. Furthermore, showers and thunderstorms will develop along and near the boundary over parts of the Northeast. Moreover, on Tuesday, showers and thunderstorms are expected to grow over the Southern Rockies/Southern High Plains through Wednesday evening. Meanwhile, by Tuesday evening, a second front will move onshore over the Pacific Northwest and into Northern California by Wednesday evening. Westerly flow off the Pacific will aid in producing rain over parts of the Pacific Northwest Coast and inland on Wednesday evening. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$