251
ACUS03 KWNS 031931
SWODY3
SPC AC 031930
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0230 PM CDT WED SEP 03 2025
VALID 051200Z - 061200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
A COUPLE STRONG THUNDERSTORMS WILL BE POSSIBLE FROM THE
OHIO/TENNESSEE VALLEYS TO THE SOUTHERN PLAINS AND ACROSS PARTS OF
OREGON ON FRIDAY, THOUGH THE POTENTIAL FOR ORGANIZED SEVERE STORMS
APPEARS LOW.
..DISCUSSION
A BROAD MIDLEVEL TROUGH CENTERED ON THE GREAT LAKES REGION WILL
SHIFT SLIGHTLY EASTWARD THROUGH THE PERIOD, AS A MIDLEVEL SPEED
MAXIMUM ADVANCES EAST-NORTHEASTWARD FROM THE GREAT LAKES INTO
QUEBEC. A RELATED SURFACE LOW WILL TRACK NORTHEASTWARD FROM ONTARIO
INTO QUEBEC, WHILE A COLD FRONT EXTENTS SOUTHWESTWARD ACROSS THE OH
VALLEY TO A SEPARATE SURFACE LOW IN THE SOUTHERN GREAT PLAINS. GIVEN
A SLOW EAST-SOUTHEASTWARD MOTION OF THE FRONT AND LARGE-SCALE
FORCING FOR ASCENT LAGGING BEHIND, THUNDERSTORMS MAY TEND TO BE
ANAFRONTAL. HOWEVER, IF ANY THUNDERSTORMS CAN DEVELOP
ALONG/IMMEDIATELY AHEAD OF THE FRONT FROM THE OH/TN VALLEYS INTO THE
SOUTHERN PLAINS, AMPLE MOISTURE/BUOYANCY AND AROUND 30 KT OF
MIDLEVEL WEST-SOUTHWESTERLY FLOW WOULD CONDITIONALLY SUPPORT A
COUPLE STRONG/LOOSELY ORGANIZED STORMS.
FARTHER WEST, A MIDLEVEL TROUGH WILL APPROACH THE PACIFIC NORTHWEST
THROUGH THE PERIOD. RELATED FORCING FOR ASCENT WILL PROMOTE
SCATTERED THUNDERSTORMS ACROSS OR. MODERATELY ENHANCED MIDLEVEL FLOW
AND STEEP DEEP-LAYER LAPSE RATES MAY PROMOTE A COUPLE STRONG STORMS
CAPABLE OF PRODUCING LOCALLY STRONG WIND GUSTS.
..WEINMAN.. 09/03/2025
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page