ACUS02 KWNS 121705
SWODY2
SPC AC 121704
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1104 AM CST WED DEC 12 2012
VALID 131200Z - 141200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
LARGE SCALE SPLIT UPPER FLOW WILL PREVAIL OVER NORTH AMERICA ON
THURSDAY. WITHIN THE SOUTHERN STREAM...A LOW AMPLITUDE SHORTWAVE
TROUGH CURRENTLY OVER THE SOUTHEAST STATES WILL QUICKLY EXIT THE
COASTAL SOUTHEAST ON THURSDAY...WHILE A COLD FRONT CONTINUES TO
PROGRESS SOUTHEASTWARD ACROSS SOUTH FL/OFFSHORE WATERS.
MEANWHILE...AN UPPER TROUGH CURRENTLY OFF THE COAST OF CA WILL
CONTINUE TO AMPLIFY/SPREAD EAST-SOUTHEASTWARD TOWARD COASTAL
SOUTHERN CA AND NORTHERN BAJA.
...SOUTH FL...
ALTHOUGH THE COLD FRONT SHOULD CLEAR THE SOUTH FL COAST RELATIVELY
EARLY IN THE DAY...A RELATIVELY NARROW SPATIOTEMPORAL OPPORTUNITY
FOR A FEW TSTMS MAY EXIST FOR SOUTHEAST FL COASTAL AREAS AND
ADJACENT OFFSHORE WATERS.
...SOUTHWEST DESERTS/SOUTHERN ROCKIES...
CONSIDERABLE MOISTENING WILL OCCUR INTO THE REGION ON THURSDAY IN
ADVANCE OF THE EAST-SOUTHEAST ADVANCING UPPER TROUGH IN VICINITY OF
SOUTHERN CA/NORTHERN BAJA. THIS MOISTENING IN CONJUNCTION WITH
RELATIVELY STEEP LAPSE RATES ALOFT/WEAK DESTABILIZATION...AND AMPLE
FORCING FOR ASCENT ACCENTUATED BY AN UPPER JET EXIT REGION...WILL
ACCOUNT FOR AT LEAST ISOLATED TSTM POTENTIAL. THIS WILL MAINLY BE
ACROSS PORTIONS OF THE LOWER CO RIVER VALLEY AND LOWER DESERTS/RIM
VICINITY OF AZ THURSDAY AFTERNOON AND EVENING.
..GUYER.. 12/12/2012
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