SWODY1
SPC AC 061551
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0951 AM CST FRI FEB 06 2009
VALID 061630Z - 071200Z
...NO SVR TSTM AREAS FORECAST...
...SOUTHERN CA...
A STRONG UPPER TROUGH IS DIGGING SOUTHEASTWARD TOWARD THE SOUTHERN
CA COASTLINE THIS MORNING. MEANWHILE...SCATTERED SHOWERS ASSOCIATED
WITH THE PRIMARY SURFACE COLD FRONT ARE BECOMING EVIDENT ON RADAR
LOOPS APPROACHING POINT CONCEPTION. THUS FAR...NO LIGHTNING
ACTIVITY HAS BEEN NOTED WITH FRONTAL ACTIVITY. HOWEVER...FORECAST
SOUNDINGS ALONG THE SOUTHERN CA COAST SHOW STEEPENING LAPSE RATES
AND MARGINAL INSTABILITY BY EARLY AFTERNOON. THIS SHOULD PROMOTE
ISOLATED THUNDERSTORMS AS THE FRONT MOVES INLAND. COLD TEMPERATURES
ALOFT AND FORCING ASSOCIATED WITH LEFT EXIT REGION OF UPPER JET MAY
AID UPDRAFT STRENGTH AND LEAD TO A THREAT OF HAIL IN STRONGER CELLS.
LOW LEVEL WINDS ARE EXPECTED TO BE RELATIVELY WEAK...BUT OROGRAPHIC
EFFECTS COULD LOCALLY ENHANCE SHEAR PROFILES AND ALSO POSE A RISK OF
AN ISOLATED BRIEF TORNADO.
..HART.. 02/06/2009
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