727
ACUS48 KWNS 230943
SWOD48
SPC AC 230941
DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0341 AM CST TUE DEC 23 2025
VALID 261200Z - 311200Z
..DISCUSSION
FROM FRIDAY/DAY 4 TO SUNDAY/DAY 6, A MID-LEVEL RIDGE IS FORECAST TO
MOVE EASTWARD FROM THE CENTRAL U.S. TO THE EASTERN SEABOARD. DURING
THIS TIME, A TROUGH IS FORECAST TO DEVELOP IN THE PACIFIC NORTHWEST,
AND THEN TO DIG SOUTHEASTWARD INTO THE MID MISSISSIPPI VALLEY. AN
ASSOCIATED COLD FRONT IS FORECAST TO MOVE SOUTHEASTWARD INTO THE
OHIO AND TENNESSEE VALLEYS BY SUNDAY AFTERNOON. AHEAD OF THE FRONT,
SURFACE DEWPOINTS IN THE 60S F SHOULD RESULT IN WEAK DESTABILIZATION
WITH THUNDERSTORM DEVELOPMENT POSSIBLE ALONG THE FRONT. HOWEVER, THE
MODELS SUGGEST THAT MOST OF THE CONVECTION WILL BE POST-FRONTAL.
THIS LIMITATION SHOULD KEEP ANY SEVERE THREAT MARGINAL.
ON MONDAY/DAY 7 AND TUESDAY/DAY 8, THE TROUGH IS FORECAST TO MOVE
ACROSS THE EASTERN U.S. INTO THE WESTERN ATLANTIC, WITH THE FRONT
MOVING OFF THE ATLANTIC COAST. IN ITS WAKE, A RELATIVELY DRY AND
COOL AIRMASS WILL MAKE THUNDERSTORM DEVELOPMENT UNLIKELY ACROSS MOST
OF THE NATION.
..BROYLES.. 12/23/2025
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