254
ACUS48 KWNS 270954
SWOD48
SPC AC 270953
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0353 AM CST THU NOV 27 2025
VALID 301200Z - 051200Z
..DISCUSSION
A PROGRESSIVE UPPER PATTERN WILL OVERSPREAD THE CONUS NEXT WEEK,
USHERING IN MULTIPLE ROUNDS OF SURFACE HIGH PRESSURE ACROSS THE
WESTERN, NORTHERN, AND EASTERN CONUS. THUNDERSTORM DEVELOPMENT
SHOULD THUS BE LIMITED OVER MUCH OF THE U.S. THROUGH THE EXTENDED
FORECAST PERIOD. ONE EXCEPTION MAY BE PORTIONS OF THE GULF COAST
EARLY NEXT WEEK. BY AROUND DAY 6 (TUESDAY), MEDIUM-RANGE GUIDANCE
DEPICTS A PRONOUNCED MID-LEVEL TROUGH AMPLIFYING OVER THE MIDDLE MS
VALLEY, SUPPORTING SURFACE LOW DEVELOPMENT ALONG THE SOUTHEAST GULF
COAST. SEASONAL LOW-LEVEL MOISTURE MAY ADVECT A FEW HUNDRED MILES
INLAND FROM THE COAST, AHEAD OF THE SURFACE LOW. IF THIS OCCURS,
ISOLATED SEVERE THUNDERSTORMS MAY DEVELOP ALONG THE WARM FRONT.
HOWEVER, TIMING AND PLACEMENT OF THE SURFACE LOW DIFFERS TOO MUCH
AMONG MEDIUM RANGE GUIDANCE FOR THE INTRODUCTION OF SEVERE
PROBABILITIES THIS FAR IN ADVANCE.
..SQUITIERI.. 11/27/2025
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