500
ACUS48 KWNS 240943
SWOD48
SPC AC 240942
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0342 AM CST WED DEC 24 2025
VALID 271200Z - 011200Z
..DISCUSSION
THIS WEEKEND, A MID-LEVEL RIDGE WILL MOVE FROM THE MID MISSISSIPPI
VALLEY EASTWARD TO THE ATLANTIC SEABOARD, AS A TROUGH DIGS
SOUTHEASTWARD INTO THE NORTH-CENTRAL U.S. A MOIST AIRMASS WILL
ADVECT NORTHEASTWARD INTO THE OHIO AND TENNESSEE VALLEYS, AHEAD OF A
COLD FRONT MOVING THROUGH THE MID MISSISSIPPI VALLEY. THUNDERSTORM
DEVELOPMENT, MOSTLY POST-FRONTAL IN NATURE, WILL BE POSSIBLE SUNDAY
AFTERNOON FROM THE ARKANSAS RIVER VALLEY NORTHEASTWARD INTO THE OHIO
VALLEY. ALTHOUGH AN ISOLATED SEVERE THREAT MAY DEVELOP, THE STORMS
SHOULD BE ELEVATED AND THE THREAT WILL BE LIMITED BY WEAK
INSTABILITY. ON MONDAY, THE COLD FRONT IS FORECAST TO MOVE TO THE
SOUTHERN ATLANTIC SEABOARD, WITH A DRY AND COOL AIRMASS RESIDING
OVER MUCH OF THE NATION. THIS DRY AIRMASS IS FORECAST TO REMAIN IN
PLACE THROUGH MID-WEEK, KEEPING THE CHANCE FOR THUNDERSTORMS LOW
ACROSS THE CONTINENTAL U.S.
..BROYLES.. 12/24/2025
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