Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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647 FXUS01 KWBC 300622 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 221 AM EDT Sun Aug 30 2026 Valid 12Z Sun Aug 30 2026 - 12Z Tue Sep 01 2026 ...There is a Slight Risk (level 2/4) of excessive rainfall over parts of the Southwest, Great Basin, and Central Rockies through Monday... Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Southwest, Great Basin, and Central Rockies on Sunday and Monday. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, narrow canyons/gullies, and burn scars the most vulnerable. A quasi-stationary front from the North Carolina Coast southwestward to the Lower Mississippi Valley will slowly dissipate from west to east to the North Carolina Coast by late Sunday morning. Near and south of the front, showers and thunderstorms will develop over the Southern Mid-Atlantic to the Southeast and Central/Eastern Gulf Coast through Sunday evening. From Sunday night to Tuesday morning, showers and thunderstorms will develop over the Central/Eastern Gulf Coast and into parts of the Western Gulf Coast. Showers and thunderstorms will also develop over the Northern High Plains and into the Northern Plains through early Monday morning. Additionally, showers and thunderstorms will develop along and near a warm front extending from the Great Lakes into parts of the Northeast and Mid-Atlantic from Monday through Tuesday. Lastly, scattered rain will develop over parts of the Northwest Coast on early Tuesday morning. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php Extreme Heat Key Messages available at: https://www.wpc.ncep.noaa.gov/key_messages/LatestKeyMessage_1.png $$