DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 281258
SWODY1
SPC AC 281256

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0656 AM CST WED NOV 28 2012

VALID 281300Z - 291200Z

...NO SVR TSTM AREAS FORECAST...

...CENTRAL CA COAST...
WATER VAPOR LOOPS SHOW A VIGOROUS UPPER SHORTWAVE TROUGH APPROACHING
THE CENTRAL CA COAST. THIS SYSTEM WILL ROTATE ACROSS THE SFO AREA
AND INTO THE CENTRAL VALLEY THIS AFTERNOON...WITH A BAND OF
WIDESPREAD SHOWERS OVERSPREADING THE AREA. 12Z OBSERVED RAOBS AND
FORECAST SOUNDINGS SHOW LITTLE INSTABILITY ACROSS THIS REGION TODAY.
HOWEVER...STRONG LARGE SCALE ASCENT AND OROGRAPHIC FORCING MAY LEAD
TO ISOLATED LIGHTNING STRIKES AS THE ACTIVITY MOVES ASHORE. LOCALLY
GUSTY WINDS ARE LIKELY WITH THE MORE ROBUST SHOWERS...BUT ORGANIZED
SEVERE STORMS ARE NOT EXPECTED AT THIS TIME.

ELSEWHERE...A FEW LIGHTNING STRIKES MAY OCCUR THIS AFTERNOON AND
EVENING AS BANDS OF LAKE EFFECT SNOW MOVE INTO CENTRAL NY.
OTHERWISE...DRY AND STABLE CONDITIONS SHOULD PRECLUDE THUNDERSTORM
ACTIVITY TODAY.

..HART/DISPIGNA.. 11/28/2012

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