

927 

WWUS20 KWNS 191824

SEL2

SPC WW 191824

GAZ000-NCZ000-SCZ000-CWZ000-200000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 512

NWS STORM PREDICTION CENTER NORMAN OK

225 PM EDT SUN JUN 19 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF NORTHERN GEORGIA

       MUCH OF SOUTHERN NORTH CAROLINA

       MUCH OF NORTHERN AND WESTERN SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 225 PM UNTIL 800

PM EDT.



HAIL TO 2 INCHES 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 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH OF

KNOXVILLE TENNESSEE TO 55 MILES EAST NORTHEAST OF MYRTLE BEACH

SOUTH CAROLINA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 511...



DISCUSSION...THUNDERSTORMS EXPECTED TO INCREASE IN NUMBER AND

INTENSITY ACROSS THE WATCH AREA THRU THE AFTERNOON AS AIR MASS

BECOMES MDTLY UNSTABLE.  INITIAL SEVERE STORMS WILL LIKELY BE ALONG

E/W BOUNDARY SC...HOWEVER ADDITIONAL SEVERE STORMS WILL DEVELOP EWD

ACROSS SRN APPALACHIANS AS STRONGER FLOW ASSOCIATED WITH MCV OH

VALLEY APPROACHES AREA. PRIMARY THREAT WILL BE DAMAGING WINDS AND

LARGE HAIL...HOWEVER BY LATER THIS AFTERNOON SUFFICIENT SHEAR FOR

SUPERCELLS AND POSSIBLE ISOLATED TORNADOES.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 27020.





...HALES

