482 
ACUS11 KWNS 051107
SWOMCD
SPC MCD 051107 
GAZ000-NCZ000-TNZ000-ALZ000-051230-

MESOSCALE DISCUSSION 0755
NWS STORM PREDICTION CENTER NORMAN OK
0607 AM CDT MON MAY 05 2003

AREAS AFFECTED...ERN TN / EXTREME SWRN NC / NERN AL / NRN GA...

CONCERNING...TORNADO WATCH 245...

VALID 051107Z - 051230Z

SEVERE THREAT APPEARS TO BE LIMITED ACROSS ALL BUT FAR SRN PORTIONS
OF WW.	SEVERE THREAT MAY ALSO EXTEND SWD INTO NERN AL / NRN GA
SOUTH OF CURRENT WATCH.  A NEW WW WILL BE ISSUED SHORTLY FOR PARTS
OF N GA.

LATEST RADAR LOOP SHOWS WIDESPREAD RAIN / THUNDERSTORMS ACROSS
WW...WITH MOST INTENSE STORMS ALONG THE TN / AL AND TN / GA BORDERS
ATTM.  WEAK NW-SE SURFACE BOUNDARY / WARM FRONT IS ANALYZED FROM
MIDDLE TN SEWD ALONG THE GA / AL BORDER -- SEPARATING GULF AIRMASS
FROM AIR ORIGINATING FROM WITHIN COLD-AIR DAM EAST OF APPALACHIANS.

ALTHOUGH SHALLOW / STABLE BOUNDARY LAYER EXISTS E OF SURFACE
BOUNDARY...LOW-LEVEL MOISTURE IS BEING ADVECTED NNEWD INTO THIS
REGION ON SSWLY WINDS.	AS A RESULT...SUFFICIENT ELEVATED
INSTABILITY EXISTS TO ALLOW STORMS TO MOVE SEWD ACROSS NERN AL / NRN
GA.  

WITH SURFACE WINDS SOUTH OF EAST TO THE E OF SURFACE BOUNDARY...
LOW-LEVEL SHEAR SUGGESTS A LIMITED TORNADO THREAT IN A NARROW ZONE
NEAR AND JUST E OF SURFACE BOUNDARY WHERE STABLE BOUNDARY LAYER IS
MOST SHALLOW.  HOWEVER...MAIN THREAT ACROSS THIS REGION SHOULD BE
HAIL AND PERHAPS A LOCALLY DAMAGING GUST AS STORMS MOVE SEWD INTO
PROGRESSIVELY-DEEP / STABLE BOUNDARY LAYER.

..GOSS.. 05/05/2003

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

ATTN...WFO...GSP...MRX...FFC...OHX...BMX...HUN...

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