667
ACUS02 KWNS 180555
SWODY2
SPC AC 180553
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1253 AM CDT MON AUG 18 2025
VALID 191200Z - 201200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
A SEVERE THREAT IS NOT EXPECTED ACROSS THE CONTINENTAL U.S. ON
TUESDAY OR TUESDAY NIGHT.
..DISCUSSION
A MID-LEVEL RIDGE WILL BUILD NORTHWARD ACROSS THE CENTRAL ROCKIES
AND NORTHERN HIGH PLAINS ON TUESDAY, AS A SUBTLE SHORTWAVE TROUGH
MOVES THROUGH THE GREAT LAKES REGION. AT THE SURFACE, A COLD FRONT
WILL ADVANCE SOUTHWARD INTO THE OHIO AND MID MISSISSIPPI VALLEYS,
EXTENDING WESTWARD INTO THE SOUTHERN PLAINS. AS SURFACE TEMPERATURES
WARM DURING THE DAY, LOW-LEVEL CONVERGENCE NEAR THE FRONT WILL BE
FAVORABLE FOR ISOLATED TO SCATTERED THUNDERSTORM DEVELOPMENT.
LIMITED LARGE-SCALE ASCENT AND WEAK DEEP-LAYER SHEAR WILL BE
UNFAVORABLE FOR SEVERE STORMS. FURTHER NORTHWEST INTO THE
NORTH-CENTRAL STATES, MODERATE INSTABILITY WILL BE POSSIBLE BY
TUESDAY AFTERNOON, MAINLY IN THE DAKOTAS. HOWEVER, A SEVERE THREAT
IS NOT EXPECTED DUE TO LIMITED LARGE-SCALE ASCENT, MINIMAL LOW-LEVEL
CONVERGENCE, AND WEAK DEEP-LAYER SHEAR. ELSEWHERE ACROSS THE
CONTINENTAL U.S., A SEVERE THREAT IS NOT EXPECTED TUESDAY AND
TUESDAY NIGHT.
..BROYLES.. 08/18/2025
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