SWODY2
SPC AC 210559
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1159 PM CST SUN JAN 20 2008
VALID 221200Z - 231200Z
..NO SVR TSTM AREAS FORECAST...
..FLORIDA...
ZONAL FLOW ACROSS THE SRN US TONIGHT WILL GIVE WAY TO A DEVELOPING
UPPER-LEVEL TROUGH IN THE OH AND TN VALLEYS TUESDAY. AT THE SFC...A
COLD FRONT IN THE MS VALLEY TUESDAY MORNING WILL MOVE QUICKLY SEWD
ACROSS THE SERN US REACHING THE FL PANHANDLE TUESDAY NIGHT. AHEAD OF
THE FRONT...MOISTURE ADVECTION TONIGHT WILL RAISE SFC DEWPOINTS
ACROSS THE SRN HALF OF THE FL PENINSULA BACK INTO THE 60S F. AS A
RESULT...SOME INSTABILITY SHOULD BE PRESENT BY TUESDAY AFTERNOON. AS
A SHORTWAVE TROUGH APPROACHES SRN FL TUESDAY
AFTERNOON...THUNDERSTORM DEVELOPMENT WILL BECOME LIKELY FROM LAKE
OKEECHOBEE SWD. VERTICAL SHEAR PROFILES ON FORECAST SOUNDINGS IN SRN
FL TUESDAY SHOW 0-6 KM SHEAR VALUES IN THE 30 TO 40 KT RANGE. GIVEN
THE WEAK INSTABILITY FORECAST...VERTICAL SHEAR DOES NOT APPEAR
STRONG ENOUGH FOR AN UNORGANIZED SEVERE THREAT.
.BROYLES.. 01/21/2008
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