SWODY1
SPC AC 131230
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0630 AM CST MON FEB 13 2012
VALID 131300Z - 141200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
A MID/UPPER-LEVEL SHORTWAVE TROUGH OVER THE CNTRL/SRN PLAINS WILL
MINOR OUT AS IT PROGRESSES EWD TOWARD THE OH/TN VALLEY REGION. IN
ASSOCIATION WITH THE TROUGH...A SLY LLJ WILL MOVE EWD FROM THE SRN
PLAINS TOWARD THE SERN STATES WHILE GRADUALLY VEERING AND WEAKENING
TONIGHT. WAA AND MOISTURE ADVECTION ATTENDANT TO THE LLJ WILL
SUPPORT AN EWD-MOVING SECTOR OF WEAK ELEVATED INSTABILITY AND
ISOLATED THUNDERSTORMS FROM ERN TX EWD TOWARD FAR WRN GA AND THE WRN
FL PANHANDLE. AS A WEAK SFC WAVE DEVELOPS INVOF THE TX COAST AND
TRACKS ENEWD TOWARD SERN MS...A FEW STRONGER STORMS MAY BRUSH ACROSS
THE MIDDLE/UPPER TX COAST AND LA COAST OWING TO STRONG LOW-LEVEL AND
DEEP-LAYER VERTICAL WIND SHEAR. HOWEVER...INLAND PENETRATION OF ANY
APPRECIABLE SFC-BASED BUOYANCY IS NOT EXPECTED...AND THUS NO SVR
STORMS ARE CURRENTLY ANTICIPATED OVER INLAND AREAS AND THE ADJACENT
COASTAL WATERS OF THE GULF OF MEXICO.
FARTHER WEST...A MID-LEVEL LOW WILL MOVE SSEWD ACROSS PARTS OF CA
AND NV TOWARD THE LOWER CO RIVER VALLEY...WITH COLD MID-LEVEL
TEMPERATURES /500-MB TEMPS OF -30C TO -27C/ AND STEEP LAPSE RATES
ACCOMPANYING THE LOW. AND...WITH ADEQUATE MID-LEVEL MOISTURE AND THE
COMBINED EFFECTS OF DCVA AND OROGRAPHIC ASCENT...A FEW WEAK
THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF THE CNTRL GREAT BASIN
AND THE SACRAMENTO AND SAN JOAQUIN VALLEYS OF CNTRL CA...MAINLY
DURING THE AFTERNOON AND EVENING HOURS.
..COHEN/MEAD.. 02/13/2012
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