[MCD] SWOMCD

Fri Jan 13 18:54:36 UTC 2006

ACUS11 KWNS 131855
SWOMCD
SPC MCD 131855 
GAZ000-FLZ000-ALZ000-132030-

MESOSCALE DISCUSSION 0053
NWS STORM PREDICTION CENTER NORMAN OK
1255 PM CST FRI JAN 13 2006

AREAS AFFECTED...SERN AL/FL PNHDL INTO SRN AND CNTRL GA

CONCERNING...TORNADO WATCH 17...18...

VALID 131855Z - 132030Z

THE THREAT FOR ISOLATED TORNADOES WILL CONTINUE ACROSS THE FL PNHDL
AND MUCH OF CNTRL/SRN GA THIS AFTERNOON...WITH A POTENTIALLY MORE
ENHANCED RISK FROM THE CNTRL FL PNHDL INTO SWRN GA.

LOCAL RADAR IMAGERY SHOWS EMBEDDED SUPERCELLS WITH INCREASINGLY
STRONG ROTATION THIS AFTERNOON OVER BARBOUR AND HENRY COUNTIES IN
FAR SERN AL.  LATEST MESOANALYSIS INDICATES THAT THESE STORMS ARE
LOCATED ALONG THE SRN EDGE OF STRONGEST PRESSURE FALLS / 5-6 MB/3
HRS / EXTENDING FROM ALONG THE AL/GA BORDER NEWD INTO UPSTATE SC. 
AS A RESULT LOW-LEVEL WIND FIELDS HAVE INCREASED OVER THE PAST
COUPLE OF HOURS WITH FT. RUCKER AL VWP SHOWING STRONG NEAR-GROUND
SHEAR WITH 0-1 KM SRH OF 350-450 M2/S2.

WHILE THERE HAS BEEN SOME MIXING OF BOUNDARY-LAYER MOISTURE ACROSS
SWRN GA...HORIZONTAL ADVECTION IS OFFSETTING THIS PROCESS TO SOME
DEGREE AND MODIFICATION OF 18Z TLH SOUNDING FOR AMBIENT SURFACE
CONDITIONS YIELDS SBCAPES OF 1000 J/KG.  GIVEN THE STRONG
LOW/MID-LEVEL SHEAR AND MODERATE INSTABILITY...ENVIRONMENT REMAINS
QUITE SUPPORTIVE OF SUPERCELLS CAPABLE OF TORNADOES IN ADDITION TO
LARGE HAIL AND DAMAGING WINDS.

THROUGH 20-21Z...IT APPEARS THE GREATEST TORNADO THREAT WILL EXIST
FROM N OF ABY TO W OF TLH.

..MEAD.. 01/13/2006

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

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

32698576 33208479 33238202 29668293 29968723 

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