SWOMCD
SPC MCD 271524
GAZ000-FLZ000-ALZ000-271730-
MESOSCALE DISCUSSION 2141
NWS STORM PREDICTION CENTER NORMAN OK
1024 AM CDT TUE OCT 27 2009
AREAS AFFECTED...CENTRAL FL PANHANDLE/SWRN GA AND VICINITY
CONCERNING...TORNADO WATCH 776...
VALID 271524Z - 271730Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 776 CONTINUES.
SURFACE ANALYSIS SHOWS A WEAK WARM FRONT LYING FROM EXTREME SERN GA
WSWWD TO THE PANAMA CITY FL VICINITY...WITH WIDESPREAD SHOWERS AND A
FEW EMBEDDED THUNDERSTORMS CONTINUING ACROSS THE ERN GULF. A FEW
OFFSHORE STORMS HAVE SHOWN ROTATION OVER THE PAST COUPLE OF
HOURS...THOUGH ROTATION HAS THUS FAR WEAKENED AS STORMS SHIFT NWD
ACROSS THE SURFACE BOUNDARY AND INTO THE COOLER LOW-LEVEL ONSHORE
AIRMASS.
AREA VAD WIND PROFILES CONTINUE TO REVEAL SUBSTANTIAL LOW-LEVEL
VEERING/SHEAR -- PARTICULARLY JUST N OF THE SURFACE BOUNDARY WHERE
0-1 KM VALUES REMAIN IN EXCESS OF 30 KT. WHILE INSTABILITY IS
MARGINAL -- PER MORNING RAOBS AND OBSERVED LACK OF
LIGHTNING...DEGREE OF SHEAR WILL CONTINUE TO SUPPORT LOW-LEVEL
ROTATION...AND ASSOCIATED/LOW-PROBABILITY THREAT FOR AN ONSHORE
TORNADO.
..GOSS.. 10/27/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...TAE...
LAT...LON 29788674 30438634 30808591 31108475 31078373 30658369
29698439 29788674
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