

131 

WWUS20 KWNS 180539

SEL6

SPC WW 180539

GAZ000-SCZ000-CWZ000-181100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 456

NWS STORM PREDICTION CENTER NORMAN OK

140 AM EDT THU JUN 18 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHWEST TO SOUTHEAST GEORGIA

       SOUTHWEST SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS THURSDAY MORNING FROM 140 AM UNTIL 700 AM 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH

SOUTHWEST OF ROME GEORGIA TO 30 MILES SOUTH SOUTHEAST OF SAVANNAH

GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 447...WW 448...WW

453...WW 454...WW 455...



DISCUSSION...CLUSTERS/LINES OF INTENSE CONVECTION OVER EASTERN

GA/WESTERN SC WILL CONTINUE TRACKING SOUTHWARD ACROSS THE WATCH AREA

FOR ANOTHER FEW HOURS.  AMPLE MOISTURE/INSTABILITY AND NORTHERLY

FLOW ALOFT MAY ALLOW SEVERE THREAT TO SPREAD ALL THE WAY TO THE

COAST LATE TONIGHT.



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 500. MEAN STORM

MOTION VECTOR 34035.





...HART

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