DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 291919
SWODY1
SPC AC 291917

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0117 PM CST THU NOV 29 2012

VALID 292000Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

...NRN CA COAST...
THE MAIN FRONTAL BAND OF CONVECTION FROM EARLIER THIS MORNING HAS
MOVED INLAND AND WEAKENED. VISIBLE SATELLITE IMAGERY AND LIGHTNING
DATA HAVE CONTINUED TO SHOW ISOLATED THUNDERSTORMS OFFSHORE.
THEREFORE...WILL MAINTAIN SEE TEXT AS SREF CONTINUES TO INDICATE LOW
PROBABILITY OF THUNDERSTORMS MOVING TOWARD THE COAST THROUGH THE
EVENING. GIVEN STRONG LOW LEVEL FLOW...ANY THUNDERSTORMS THAT COME
ASHORE COULD PRODUCE ENHANCED GUSTS.

..LEITMAN/PETERS.. 11/29/2012

.PREV DISCUSSION... /ISSUED 0949 AM CST THU NOV 29 2012/

...NRN CA COAST...
A PERSISTENT BELT OF STRONG FLOW WILL BE MAINTAINED THROUGH THE
PERIOD OVER THE NRN CA REGION AS A LARGE SCALE UPPER TROUGH MOVES
LITTLE OVER THE NERN PACIFIC TO THE W OF BRITISH COLUMBIA. SEVERAL
SMALL SCALE IMPULSES WILL CONTINUE TO ROTATE THROUGH THE BASE OF THE
UPPER TROUGH AND INTO THE NRN CA/ORE COAST. AS SUCH...A CONTINUED
THREAT FOR INTERMITTENT ISOLD TSTMS WILL EXIST THROUGH DAYBREAK
FRIDAY NEAR THE COAST. A WEAKLY BUOYANT AIRMASS IN COMBINATION WITH
STRONG 50-60 KT WINDS IN THE LOWEST FEW THOUSAND FEET...MAY
FACILITATE THE POSSIBILITY OF STRONG MOMENTUM ALOFT BEING
TRANSPORTED TO THE SURFACE. THIS WOULD BE IN THE FORM OF A NON-ZERO
RISK FOR A DMGG WIND GUST WITH ANY VIGOROUS CONVECTIVE BAND THAT
MOVES ASHORE. ELSEWHERE...AN ISOLD TSTM OR TWO MAY DEVELOP LATE
TONIGHT OFF THE LOWER-MIDDLE TX COAST.

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