SWODY1
SPC AC 060052
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0652 PM CST THU FEB 05 2009
VALID 060100Z - 061200Z
...NO TSTM AREAS FORECAST...
...COASTAL CA...
SHORTWAVE TROUGH WITH EMBEDDED VORTICITY MAXIMA IS MOVING THROUGH
CA. WV IMAGERY INDICATES STRONGEST VORT MAX JUST OFF THE SRN CA
COAST. ISOLATED LIGHTNING STRIKES WERE OBSERVED OFFSHORE EARLIER
TODAY...BUT TREND HAS BEEN FOR THUNDERSTORM ACTIVITY TO DIMINISH AS
THE UPPER TROUGH MOVES INLAND. SCATTERED MOSTLY SHALLOW CONVECTION
WILL CONTINUE WITHIN ZONE OF 6.5-7 C/KM MID-LEVEL LAPSE RATES AND
LIFT ASSOCIATED WITH THE UPPER TROUGH. THE VANDENBERG 00Z SOUNDING
INDICATED SHALLOW INSTABILITY CONFINED TO LAYERS WITH TEMPERATURES
ABOVE -15C AND LIMITED CHARGE SEPARATION POTENTIAL. THE WEAK
INSTABILITY WILL LIMIT PROSPECTS FOR DEEP CONVECTION THE REMAINDER
OF THIS PERIOD. ISOLATED LIGHTNING STRIKES REMAIN POSSIBLE MAINLY
NEAR THE COAST...BUT COVERAGE WILL PROBABLY NOT EXCEED 10%.
AN UPSTREAM SHORTWAVE TROUGH WILL APPROACH THE CNTRL CA COAST TOWARD
THE END OF THIS PERIOD...BUT ANY THUNDERSTORM ACTIVITY ASSOCIATED
WITH THIS FEATURE IS EXPECTED TO REMAIN OFFSHORE.
..DIAL.. 02/06/2009
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