


Prognostic Meteorological Discussion
Issued by NWS
Issued by NWS
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193 FXUS01 KWBC 120749 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 348 AM EDT Wed Mar 12 2025 Valid 12Z Wed Mar 12 2025 - 12Z Fri Mar 14 2025 ...Severe Weather potential over the Southern Plains and Lower Mississippi Valley today... ...Storm system brings unsettled weather to the West... ...Critical Fire Weather Risk over parts of the Southern High Plains through the rest of the week... ...Warm temperatures in the Central and Eastern U.S.... A potent shortwave and surface low pressure system will move across the Southern Plains today. Scattered showers and thunderstorms will develop over the ArkLaTex and Lower Mississippi Valley tonight. The Storm Prediction Center issued a Slight Risk of Severe Thunderstorms over parts of northeast Texas southeast Oklahoma, western Arkansas and northwestern Louisiana, where large hail and localized wind damage are possible beginning this afternoon and continuing into early Thursday morning. In the West, an amplified upper trough will move ashore today, spreading Pacific moisture, cooler air and strong winds across the region. Heavy snow and powerful wind gusts of 40-70 mph below many major passes will create dangerous to potentially impossible travel conditions across the Sierra Nevada and northern California higher terrain this afternoon into Thursday. Snowfall of 1 to 3 feet or more is possible which, along with high winds, would cause scattered power outages. Heavy snow above 5000 feet and high winds will cause widespread hazardous travel over much of the southern Intermountain West and Rockies Thursday into Friday. Periods of heavy rain with rates of 0.5"/hr are likely in parts of southern California through Thursday morning. This could cause flash flooding, including shallow debris flows across sensitive burn scars or isolated rockslides, as well as hazardous travel due to ponding of water and slick roads. Persistent dry, warm and windy conditions will promote Critical Fire Weather conditions across the Southern High Plains through the rest of the week. Upper-level ridging will support above average temperatures across the Central and Eastern U.S. for the next few days. High temperatures in the 50s, 60s and 70s over the Midwest and Northern Plains will represent 20 - 40 degree anomalies through the end of the work week. Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$