

000 

WWUS20 KWNS 201746

SEL7

SPC WW 201746

GAZ000-210100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 547

NWS STORM PREDICTION CENTER NORMAN OK

145 PM EDT FRI JUL 20 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN GEORGIA



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 145 PM UNTIL 900

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 EAST AND WEST OF A LINE FROM 35 MILES NORTH OF

MACON GEORGIA TO 20 MILES EAST SOUTHEAST OF MOULTRIE GEORGIA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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...



DISCUSSION...LINE OF SEVERE THUNDERSTORMS WITH A BOW ECHO SIGNATURE

WILL CONTINUE SEWD NEXT SEVERAL HOURS.  ACTIVITY IS WORKING ON

INSTABILITY GRADIENT WHERE MLCAPE IS BETWEEN 1500-2000 J/KG.

ACTIVITY IA ALSO ASSOCIATED WITH INCREASING COOL POOL BEHIND IT

WHICH WILL LEAD TO ENHANCED UVVS AS IT MOVES SEWD INTO CENTRAL AND

SOUTHERN GA.



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 30030.





...MCCARTHY

