018
ACUS02 KWNS 211716
SWODY2
SPC AC 211714
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1114 AM CST SAT DEC 21 2024
VALID 221200Z - 231200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
SEVERE THUNDERSTORMS ARE NOT EXPECTED ON SUNDAY.
..SYNOPSIS
BROAD UPPER RIDGING OVER THE CENTRAL CONUS WILL BEGIN TO BREAK DOWN
THROUGH THE DAY SUNDAY AS A SHORTWAVE TROUGH, CURRENTLY MOVING INTO
THE PACIFIC NORTHWEST, TRAVERSES THE ROCKIES. A BROAD SURFACE HIGH
BUILDING OVER THE EASTERN CONUS WILL MAINTAIN COOL/DRY CONDITIONS.
WEAK LEE TROUGHING OVER THE HIGH PLAINS WILL PROMOTE GRADUAL
MOISTURE RETURN ALONG THE TX GULF COAST, BUT MOISTURE QUALITY/DEPTH
AND POOR MID-LEVEL LAPSE RATES WILL BE INSUFFICIENT TO SUPPORT DEEP
CONVECTION. A PRONOUNCED UPPER WAVE NOTED OVER THE NORTHERN PACIFIC
IN WATER-VAPOR IMAGERY WILL APPROACH THE WEST COAST THROUGH THE
PERIOD. LATEST FORECAST GUIDANCE SUGGESTS SUFFICIENT DESTABILIZATION
FOR A FEW LIGHTNING FLASHES IS POSSIBLE AS COLDER TEMPERATURES ALOFT
AND BROAD SCALE ASCENT OVERSPREAD THE REGION. THE POTENTIAL FOR
SEVERE CONVECTION REMAINS LOW GIVEN VERY LIMITED BUOYANCY.
..MOORE.. 12/21/2024
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