875
ACUS02 KWNS 211648
SWODY2
SPC AC 211646
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1046 AM CST SUN DEC 21 2025
VALID 221200Z - 231200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
SEVERE THUNDERSTORMS ARE NOT FORECAST ON MONDAY.
..SYNOPSIS AND DISCUSSION
MINIMAL THUNDERSTORM POTENTIAL REMAINS EVIDENT ACROSS MUCH OF THE
CONUS ON MONDAY, AS UPPER-LEVEL RIDGING IS MAINTAINED OVER THE
CENTRAL U.S. ONE EXCEPTION MAY BE ACROSS PARTS OF COASTAL WA/OR AS A
MID-LEVEL SHORTWAVE TROUGH PROGRESSES EASTWARD FROM THE EASTERN
PACIFIC INTO BRITISH COLUMBIA AND THE PACIFIC NORTHWEST THROUGH
MONDAY AFTERNOON/EVENING. EVEN THOUGH DAYTIME HEATING AND LOW-LEVEL
MOISTURE ARE FORECAST TO REMAIN LIMITED, COOL TEMPERATURES ALOFT AND
WEAK MUCAPE ASSOCIATED WITH THE SHORTWAVE TROUGH MAY SUPPORT
OCCASIONAL LIGHTNING FLASHES WITH LOW-TOPPED CONVECTION MOVING
INLAND ALONG THE IMMEDIATE WA/OR COAST.
A PLUME OF MID-LEVEL MOISTURE AND ASSOCIATED PRECIPITATION WILL
IMPACT PARTS OF NORTHERN/CENTRAL CA THROUGH THE PERIOD, ALTHOUGH
WARMER MID-LEVEL TEMPERATURES COMPARED TO LOCATIONS FARTHER NORTH
AND NEGLIGIBLE FORECAST INSTABILITY SUGGEST LITTLE POTENTIAL FOR
LIGHTNING. ELSEWHERE, VERY WEAK FORCING ALOFT SHOULD LIMIT
THUNDERSTORM POTENTIAL ACROSS COASTAL TX TO THE CENTRAL GULF COAST,
EVEN AS LOW-LEVEL MOISTURE GRADUALLY INCREASES ACROSS THESE AREAS.
..GLEASON.. 12/21/2025
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