ZCZC SPCSWOMCD ALL
ACUS11 KWNS 301701 
SPC MCD 301701 
SCZ000-GAZ000-301830-

MESOSCALE DISCUSSION 1243
NWS STORM PREDICTION CENTER NORMAN OK
1201 PM CDT TUE JUN 30 2015

AREAS AFFECTED...CNTRL AND NRN GA...WRN AND CNTRL SC

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

VALID 301701Z - 301830Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...AN ISOLATED WIND DAMAGE THREAT WILL BE POSSIBLE THIS
AFTERNOON ACROSS CNTRL AND NRN GA EWD INTO SC. HAIL COULD ALSO OCCUR
WITH THE STRONGER UPDRAFTS. WW ISSUANCE MAY BE NEEDED ACROSS THE
REGION.

DISCUSSION...THE LATEST SFC ANALYSIS SHOWS A VERY MOIST AIRMASS IN
PLACE ACROSS MUCH OF CNTRL AND NRN GA WHERE SFC DEWPOINTS ARE IN THE
UPPER 60S AND LOWER 70S F. THIS IS CONTRIBUTING TO A POCKET OF
STRONG INSTABILITY ANALYZED FROM CNTRL GA NEWD INTO THE SRN
APPALACHIAN MTNS WHERE MLCAPE IS ESTIMATED FROM 2000 TO 3500 J/KG.
IN ADDITION...THE WSR-88D VWP AT PEACHTREE CITY SHOWS A
UNIDIRECTIONAL WIND PROFILE WITH SOME SPEED SHEAR IN THE LOW TO
MID-LEVELS. THIS IS RESULTING IN 30 TO 35 KT OF 0-6 KM SHEAR WHICH
WILL BE FAVORABLE FOR STORM ORGANIZATION THIS AFTERNOON. AS AN
UPPER-LEVEL TROUGH MOVES INTO THE SRN APPALACHIAN MTNS...A BAND OF
LARGE-SCALE ASCENT EVIDENT ON WATER VAPOR IMAGERY...SHOULD HELP
STORM COVERAGE TO INCREASE OVER THE NEXT FEW HOURS. ALTHOUGH WIND
DAMAGE WILL BE THE PRIMARY THREAT...HAIL COULD ALSO OCCUR WITH THE
STRONGER UPDRAFTS. THE WIND DAMAGE THREAT SHOULD BE GREATEST WITH
ANY LINE-SEGMENTS THAT CAN GRADUALLY ORGANIZE THIS AFTERNOON.

..BROYLES/HART.. 06/30/2015

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

ATTN...WFO...CHS...CAE...GSP...FFC...

LAT...LON   32238197 32148327 32388418 33088483 34118505 34498408
            34678263 34718161 34598091 34508067 34198049 33948043
            33618033 33288029 32848057 32658097 32238197 

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