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000 

WWUS20 KWNS 201902

SEL8

SPC WW 201902

GAZ000-SCZ000-CWZ000-210200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 548

NWS STORM PREDICTION CENTER NORMAN OK

300 PM EDT FRI JUL 20 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST GEORGIA

       CENTRAL AND EASTERN SOUTH CAROLINA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 300 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 50

STATUTE MILES EITHER SIDE OF A LINE FROM 55 MILES WEST OF

SAVANNAH GEORGIA TO 15 MILES NORTH NORTHWEST OF MYRTLE BEACH

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 546...WW 547...



DISCUSSION...COLD FRONT IS NOW LOCATED FROM NERN SC SWWD INTO E

CENTRAL GA.  AIR MASS AHEAD OF THE BOUNDARY IS MODERATELY UNSTABLE

WITH ML PARCEL CAPE TO 2000 J/KG.  ACTIVITY IS INTENSIFYING ALONG

THE FRONT IN NERN SC AT THIS TIME AND ANTICIPATE INCREASE IN

COVERAGE ALONG THE BOUNDARY MOVING EWD OUT OF E CENTRAL GA DURING

THE NEXT SEVERAL HOURS.



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 450. MEAN STORM

MOTION VECTOR 24035.





...MCCARTHY

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