[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 071532
SWOMCD
SPC MCD 071529 
NCZ000-SCZ000-GAZ000-071700-

MESOSCALE DISCUSSION 2183
NWS STORM PREDICTION CENTER NORMAN OK
1029 AM CDT TUE SEP 07 2004

AREAS AFFECTED...SC / ERN GA / NC

CONCERNING...TORNADO WATCH 808...

VALID 071529Z - 071700Z

TORNADO THREAT CONTINUES....PARTICULARLY ACROSS THE ERN 2/3 OF SC. 
NEW TORNADO WATCH WILL BE ISSUED WITHIN THE NEXT HOUR REPLACING WW
808...WHICH WILL EXTEND SLIGHTLY FURTHER NWD INTO SRN NC.

LATEST RADAR IMAGERY SHOWS FRANCES DRIFTING VERY SLOWLY NNEWD ACROSS
SWRN GA.  ALTHOUGH A LIMITED TORNADO THREAT WILL CONTINUE ACROSS N
FL -- PRIMARILY WITHIN MAIN FEEDER BAND EXTENDING FROM JUST N OF TPA
TO JUST S OF JAX -- AS WELL AS INTO PARTS OF ERN GA...GREATEST
THREAT REMAINS ACROSS SC.  

THICK CLOUD COVER EXISTS ACROSS MOST OF SC...ALTHOUGH SOME BREAKS
ARE EVIDENT ACROSS NRN PORTIONS OF THE STATE.  SOME THINNING IN THE
CLOUD COVER MAY OCCUR WITH TIME ACROSS SRN AND WRN PORTIONS OF THE
STATE...AS DRY SLOT SPREADS NEWD INTO THE REGION.  OVERALL
HOWEVER...EXPECT ONLY MINIMAL HEATING / DESTABILIZATION ACROSS THIS
REGION.

NONETHELESS...SUFFICIENT INSTABILITY EXISTS TO SUPPORT THUNDERSTORMS
-- PARTICULARLY ACROSS THE NERN THIRD OF THE STATE WHERE THINNER
CLOUD COVER AND ASSOCIATED WEAK HEATING HAS ALLOWED AROUND 1000 J/KG
MEAN-LAYER CAPE TO DEVELOP.  WITH LATEST COLUMBIA AND CHARLESTON SC
VWPS SHOWING PERSISTENT 35 TO 40 KTS 0-1 KM SHEAR / OVER 300 M2/S2
0-1 KM HELICITY...LOW-LEVEL ROTATION AND ISOLATED TORNADOES WILL
REMAIN A THREAT FOR THE NEXT SEVERAL HOURS.

..GOSS.. 09/07/2004

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

ATTN...WFO...RAH...ILM...CHS...CAE...GSP...FFC...

35128235 35008149 34787918 34137842 32258044 31948119
32038293 34828353 

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