680
ACUS01 KWNS 220043
SWODY1
SPC AC 220042
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0742 PM CDT MON SEP 21 2026
VALID 220100Z - 221200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM PARTS OF
THE SOUTHEAST TO THE SOUTHERN MID-ATLANTIC...
..SUMMARY
ISOLATED SEVERE WIND GUSTS WILL BE POSSIBLE EARLY THIS EVENING FROM
PARTS OF THE SOUTHEAST INTO THE SOUTHERN APPALACHIANS AND SOUTHERN
MID-ATLANTIC.
..SOUTHEAST/SOUTHERN APPALACHIANS/SOUTHERN MID-ATLANTIC
AT THE SURFACE, A DIFFUSE AND SLOW MOVING COLD FRONT IS CURRENTLY
ANALYZED FROM NORTHERN MISSISSIPPI NORTHEASTWARD TO WEST VIRGINIA.
TO THE SOUTHEAST OF THE FRONT, A MOIST AIRMASS IS IN PLACE WITH
DEWPOINTS MOSTLY FROM THE MID 60S TO THE MID 70S F. IN RESPONSE TO
SURFACE HEATING, MODERATE INSTABILITY HAS DEVELOPED OVER MUCH OF
THIS MOIST AIRMASS. ALONG THIS SOUTHWEST-TO-NORTHEAST CORRIDOR,
MLCAPE IS ESTIMATED BY THE RAP TO BE IN THE 1500 TO 2500 J/KG RANGE.
ALTHOUGH DEEP-LAYER SHEAR IS LIMITED, THE INSTABILITY COULD SUPPORT
A POTENTIAL FOR ISOLATED SEVERE WIND GUSTS OVER THE NEXT HOUR OR
TWO, WHILE LOW-LEVEL LAPSE RATES REMAIN STEEP.
..BROYLES.. 09/22/2026
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