SWODY1
SPC AC 280037
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0637 PM CST FRI NOV 27 2009
VALID 280100Z - 281200Z
...NO SVR TSTM AREAS FORECAST...
...CALIFORNIA....
UPWARD VERTICAL MOTION AND DESTABILIZATION NEAR A DEEPENING
MID-LEVEL LOW HAS BEEN SUFFICIENT FOR THE DEVELOPMENT OF SCATTERED
THUNDERSTORMS. ONGOING ACTIVITY...NEAR/EAST OF SAN FRANCISCO BAY
INTO THE SACRAMENTO/STOCKTON AREAS...HAS BEEN SLOWLY DEVELOPING
SOUTH SOUTHEASTWARD...AND COULD CONTINUE TO DO SO. HOWEVER...THE
LOSS OF DAYTIME HEATING MAY STABILIZE SOUNDINGS ENOUGH ACROSS THE
CENTRAL VALLEY TO REDUCE THE RISK FOR THUNDERSTORMS TO NEAR
NEGLIGIBLE LEVELS BY 02-03Z...IF NOT BEFORE.
AS THE DEVELOPING LOW CONTINUES TO DIG OVERNIGHT...MODELS ARE
SUGGESTIVE THAT STRONGER MID-LEVEL COOLING /500 MB COLD CORE OF -26
TO -28C/ AND LIFT MAY BEGIN TO IMPACT THE LOS ANGELES BASIN AND
ADJACENT SOUTHERN CALIFORNIA COASTAL AREAS BY 09-12Z. AS THIS
OCCURS...A SLIGHTLY WARMER AND MORE MOIST LOW-LEVEL ENVIRONMENT
...AS COMPARED TO AREAS TO THE NORTH...MAY SUPPORT SUFFICIENT
DESTABILIZATION FOR ISOLATED TO WIDELY SCATTERED THUNDERSTORMS.
..KERR.. 11/28/2009
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