

837 

WWUS20 KWNS 231838

SEL2

SPC WW 231838

GAZ000-NCZ000-SCZ000-240200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 542

NWS STORM PREDICTION CENTER NORMAN OK

240 PM EDT THU JUN 23 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF EAST CENTRAL GEORGIA

       LARGE PART OF EASTERN NORTH CAROLINA

       LARGE PART OF CENTRAL AND EASTERN SOUTH CAROLINA



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 240 PM UNTIL

1000 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 60

STATUTE MILES EITHER SIDE OF A LINE FROM 25 MILES SOUTH OF

AUGUSTA GEORGIA TO 35 MILES NORTH OF NEW BERN NORTH 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 541...



DISCUSSION...AIR MASS IS NOW MDTLY UNSTABLE ACROSS THE WATCH AREA.

THUNDERSTORMS WILL INCREASE ALONG SEA BREEZE FRONT/DIFFERENTIAL

HEATING INLAND PORTIONS SC/NC AND SCATTERED AREAS IN BETWEEN.  WITH

25-30KT OF SHEAR ALONG WITH MLCAPES AOA 2500...STORMS WILL GROW

UPSCALE INTO CLUSTERS/LINE SEGMENTS WITH ASSOCIATED DAMAGING WINDS.



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 24025.





...HALES

