683
ACUS48 KWNS 290847
SWOD48
SPC AC 290845
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0345 AM CDT TUE SEP 29 2026
VALID 021200Z - 071200Z
..DISCUSSION
OVER THE WEEKEND, THE PATTERN WILL CONSIST OF A LARGE-SCALE TROUGH
OVER THE NORTHEASTERN U.S.. MULTIPLE SHORTWAVE TROUGHS ARE FORECAST
TO MOVE EASTWARD THROUGH THE FLOW. A COLD FRONT APPEARS LIKELY TO
MOVE FROM THE MID MISSISSIPPI AND LOWER OHIO VALLEYS SOUTHWARD TO
NEAR THE GULF COAST. ISOLATED TO SCATTERED THUNDERSTORMS WILL BE
POSSIBLE EACH AFTERNOON AHEAD OF THE FRONT. DEEP-LAYER SHEAR IS
EXPECTED TO BE TOO WEAK FOR A SEVERE THREAT.
EARLY NEXT WEEK, MID-LEVEL FLOW IS FORECAST TO BE WEST-NORTHWESTERLY
OVER MUCH OF THE NATION. A RELATIVELY COOL AND DRY AIRMASS WILL BE
IN PLACE OVER MOST OF THE CONTINENTAL U.S. THE EXCEPTION COULD BE
ALONG PARTS OF THE IMMEDIATE GULF COAST, WHERE MOISTURE AND
INSTABILITY MAY BE SUFFICIENT FOR THUNDERSTORM DEVELOPMENT. THE
SEVERE THREAT IS EXPECTED TO BE MINIMAL.
..BROYLES.. 09/29/2026
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