SWODY2
SPC AC 251715
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1215 PM CDT SUN OCT 25 2009
VALID 261200Z - 271200Z
...NO SVR TSTM AREAS FORECAST...
...TX AND LA COASTAL PLAINS...
AN UPPER-LEVEL TROUGH OVER THE CNTRL PLAINS AND SRN ROCKIES MONDAY
MORNING WILL AMPLIFY AND DIG ESEWD INTO THE SRN PLAINS MONDAY
AFTERNOON. AT THE SFC...A COLD FRONT WILL MOVE QUICKLY SWD ACROSS
SRN PLAINS REACHING THE TX COASTAL PLAINS BY MIDDAY. A LINE OF
THUNDERSTORMS SHOULD BE ONGOING ALONG THE FRONT AT 12Z WITH THIS
CONVECTION MOVING SEWD ACROSS THE TX HILL COUNTRY AND SE TX BY LATE
MORNING CONFINING DESTABILIZATION TO THE IMMEDIATE COASTAL AREAS.
FORECAST SOUNDINGS IN THE HOUSTON AND CORPUS CHRISTI AREAS MONDAY
AFTERNOON SHOW GRADUALLY VEERING WIND PROFILES WITH HEIGHT IN THE
LOW-LEVELS WITH 55 TO 70 KT OF FLOW IN THE UPPER-LEVELS. THIS WILL
CREATE A SHEAR ENVIRONMENT THAT COULD SUPPORT ISOLATED SUPERCELL
STRUCTURES. MARGINALLY SEVERE WIND GUSTS AND SMALL HAIL WILL BE
POSSIBLE WITH STORMS THAT ROTATE. LATER IN THE PERIOD...THE
UPPER-LEVEL TROUGH IS FORECAST TO MOVE INTO EAST TX. THUNDERSTORMS
WILL BE POSSIBLE IN SRN LA AS WARM ADVECTION INCREASES AHEAD OF THE
APPROACHING SYSTEM. ABUNDANT LOW-LEVEL MOISTURE WITH SFC DEWPOINTS
IN THE MID 60S F AND INCREASING BOUNDARY LAYER FLOW COULD SUPPORT A
FEW MARGINALLY SEVERE WIND GUSTS LATE IN THE PERIOD.
..BROYLES.. 10/25/2009
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