670
ACUS02 KWNS 200550
SWODY2
SPC AC 200549
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1149 PM CST THU DEC 19 2024
VALID 211200Z - 221200Z
..NO SEVERE THUNDERSTORM AREAS FORECAST
..SUMMARY
SEVERE THUNDERSTORMS ARE NOT EXPECTED ON SATURDAY.
..DISCUSSION
THE LARGE-SCALE PATTERN WILL BE PROGRESSIVE ON SATURDAY, WITH A
SHORTWAVE TROUGH AND RELATED FRONTAL BAND MOVING INLAND ACROSS THE
PACIFIC NORTHWEST AND NORTHERN CALIFORNIA. STEEPENING MID-LEVEL
LAPSE RATES AND WEAK BUOYANCY COULD YIELD ISOLATED THUNDERSTORMS
MAINLY FOR COASTAL AREAS OF OREGON AND NORTHERN CALIFORNIA DURING
THE MORNING, AND POSSIBLY INTO THE AFTERNOON. SEVERE THUNDERSTORMS
ARE NOT EXPECTED GIVEN THE MINIMAL BUOYANCY BUT GUSTY WINDS COULD
OCCUR WITH A STORM OR TWO ALONG THE IMMEDIATE COAST.
ELSEWHERE, PREVALENT SURFACE HIGH PRESSURE EAST OF THE ROCKIES AND
STABLE CONDITIONS WILL PRECLUDE THUNDERSTORMS.
..GUYER.. 12/20/2024
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