Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 250 AM EST Wed Nov 19 2025 Valid 12Z Wed Nov 19 2025 - 12Z Fri Nov 21 2025 ...There is a Slight Risk of excessive rainfall over parts of the Southwest on Wednesday and southern Texas on Thursday... ...Light snow over parts of the southern Utah Mountains, the Colorado Mountains, and the Sierra Nevada Mountains... On Wednesday, low pressure and the associated front over the Southwest will move eastward to the Central/Southern Plains by Thursday, then northeastward to southeastern Canada by Friday. The system will produce heavy rain and thunderstorms over parts of the Southwest and rain/higher-elevation snow over parts of the Central/Southern Rockies overnight Wednesday into Thursday. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Southwest through Thursday morning. The associated heavy rain will cause mainly localized flash flooding, with urban areas, roads, small streams, and burn scars being the most vulnerable. In addition, light snow will develop over parts of the Sierra Nevada Mountains and the southern Utah Mountains on Wednesday. Furthermore, the system will produce rain with embedded thunderstorms over parts of the Southern Rockies/Southern High Plains on Wednesday into Thursday. Moreover, on Thursday, heavy rain and thunderstorms will develop over the Southern Plains and spread into the Middle/Lower Mississippi Valley. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Southern Plains into the Middle/Lower Mississippi Valley Thursday into Friday morning. 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. Also on Thursday, rain will move into the Ohio Valley, expanding into the Central Appalachian by Thursday evening and the Mid-Atlantic/Northeast overnight Thursday into Friday. Additionally, on Wednesday, another front will approach the West Coast, producing light rain over parts of the Pacific Northwest and Northern California by Wednesday afternoon, then expanding into Southern California on Thursday. The low will then move to northwestern Mexico by Friday morning. The storm will bring rain and the highest-elevation snow to the Southwest Thursday into Friday. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php