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681 

WWUS20 KWNS 030338

SEL5

SPC WW 030338

GAZ000-NCZ000-SCZ000-TNZ000-031100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 115

NWS STORM PREDICTION CENTER NORMAN OK

1135 PM EDT THU APR 2 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN GEORGIA

       WESTERN NORTH CAROLINA

       WESTERN SOUTH CAROLINA

       EAST TENNESSEE



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1135 PM

UNTIL 700 AM EDT.



HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTHEAST OF

ATLANTA GEORGIA TO 25 MILES WEST NORTHWEST OF BRISTOL TENNESSEE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 112...WW 114...



DISCUSSION...LOW-TOPPED TSTM BAND FROM E OF BHM TO NEAR CSV EXPECTED

TO BE MAIN FOCUS FOR LOW LVL ASCENT AS WRN TN UPR VORT CONTINUES

ENEWD.  DESPITE MEAGER SFC-BASED INSTABILITY...STRONG MID/UPR LVL

ASCENT IN EXIT REGION OF ASSOCIATED JET STREAK...AND STRONG LOW LVL

WLY SURGE BEHIND STORM LINE...SUGGEST CONTINUED POTENTIAL FOR SMALL

SCALE BOWS WITH DMGG WIND AS LINE ENCOUNTERS HIGHER TERRAIN OF THE

SRN APPALACHIANS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 350. MEAN STORM

MOTION VECTOR 24045.





...CORFIDI

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