[MCD] SWOMCD

Wed Dec 28 20:18:12 UTC 2005

ACUS11 KWNS 282019
SWOMCD
SPC MCD 282019 
SCZ000-GAZ000-FLZ000-ALZ000-282215-

MESOSCALE DISCUSSION 2597
NWS STORM PREDICTION CENTER NORMAN OK
0219 PM CST WED DEC 28 2005

AREAS AFFECTED...ERN AL/MUCH OF GA/W CENTRAL SC

CONCERNING...TORNADO WATCH 898...

VALID 282019Z - 282215Z

SEVERE/TORNADO THREAT CONTINUES ACROSS MUCH OF WW -- PARTICULARLY
NEAR AND E OF THE AL/GA BORDER.  WITH SEVERAL SUPERCELLS NOW ONGOING
ACROSS SWRN AND CENTRAL GA MOVING EWD...NEW WW MAY BE REQUIRED
SHORTLY E OF CURRENT WW.

LATEST RADAR IMAGERY SHOWS SEVERAL SEVERE/SUPERCELL STORMS ACROSS
ERN AL AND INTO GA...AHEAD OF EWD-MOVING COLD FRONT.  THOUGH NO
TORNADOES HAVE BEEN CONFIRMED THUS FAR...LOW-LEVEL ROTATION REMAINS
EVIDENT IN SEVERAL OF THE STRONGER STORMS.  

DEWPOINTS ARE GENERALLY IN THE UPPER 50S TO LOW 60S OVER WW
AREA...CONTRIBUTING 500 TO 1000 J/KG MEAN-LAYER CAPE WITHIN AND JUST
S OF WW.  INSTABILITY DECREASES WITH EWD EXTENT ACROSS GA...AS SLY
SURFACE TRAJECTORIES SOMEWHAT MORE ORIENTED OUT OF THE FL PENINSULA
ARE MAINTAINING LOWER /MID 50S/ DEWPOINTS.  

NONETHELESS...AS REGION OF UVV EVIDENT ON WV IMAGERY OVER ERN AL/WRN
GA /LIKELY THE LEFT EXIT REGION OF THE UPPER JET/ MOVES EWD WITH
TIME...EXPECT STORMS TO ALSO SPREAD EWD TOWARD THE GA COAST/WRN SC. 
THOUGH SLOW WEAKENING TREND APPEARS LIKELY AS STORMS MOVE EWD INTO
LESS UNSTABLE AIR...INSTABILITY SHOULD STILL BE SUFFICIENT TO
SUPPORT VIGOROUS CONVECTION.  THEREFORE...WITH A THREAT FOR AT LEAST
HAIL AND DAMAGING WINDS LIKELY TO EXTEND E OF WW...NEW WW IS BEING
CONSIDERED FOR ERN GA AND VICINITY.

..GOSS.. 12/28/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CHS...CAE...JAX...FFC...TAE...BMX...MOB...

33538591 33868512 33808163 32388126 30678194 30718479
31728688 32448671 

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