SWODY1
SPC AC 281244
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0644 AM CST SAT NOV 28 2009
VALID 281300Z - 291200Z
...NO SVR TSTM AREAS FORECAST...
...SRN CA COAST INTO THE SRN ROCKIES...
STRENGTHENING MID/UPPER LEVEL LOW OVER SRN CA IS EXPECTED TO
CONTINUE DIGGING THROUGH TONIGHT ACROSS THE LOWER CO RIVER
VALLEY/FAR NRN BAJA. FORECAST SOUNDINGS NEAR THE SRN CA COAST
INDICATE SHALLOW INSTABILITY WILL SUSTAIN LOW-TOPPED MOIST
CONVECTION AND LIKELY A FEW TSTMS FROM THE LOS ANGELES BASIN
SWD...WITH MODEST SURFACE HEATING INCREASING COVERAGE OF THIS
ACTIVITY THROUGH THE AFTERNOON. FARTHER EAST...DEEP ASCENT WILL AID
IN DESTABILIZATION TOWARDS THE 4-CORNERS REGION WITH INCREASING
MOIST CONVECTION THROUGH THE DAY. THUNDERSTORMS SHOULD BECOME
SCATTERED BY MID TO LATE AFTERNOON OVER PARTS OF CENTRAL AZ INTO THE
4-CORNERS...WITH ISOLATED TSTMS LIKELY CONTINUING THROUGH THE NIGHT
AND EVENTUALLY OVERSPREADING MUCH OF THE SRN ROCKIES WITHIN EXIT
REGION OF STRONG MID/UPPER LEVEL JET. ALTHOUGH HAIL MAY ACCOMPANY A
FEW STRONGER STORMS FROM THE CA COAST INTO THE SRN ROCKIES...OVERALL
THREAT APPEARS QUITE LIMITED AND WILL MAINTAIN LESS THAN 5% SVR
PROBABILITIES ACCORDINGLY ATTM.
..EVANS.. 11/28/2009
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