April 15: Tornado Watch #6

URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 145
   NWS STORM PREDICTION CENTER NORMAN OK
   545 PM EDT FRI APR 15 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          WESTERN AND NORTHERN GEORGIA
   
   EFFECTIVE THIS FRIDAY AFTERNOON FROM 545 PM UNTIL MIDNIGHT EDT.
   
   TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE
   MILES EAST AND WEST OF A LINE FROM 90 MILES NORTH NORTHEAST OF
   ATLANTA GEORGIA TO 20 MILES SOUTHEAST OF LA GRANGE GEORGIA.  FOR
   A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU5).
   
   REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
   TORNADOES AND 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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 141...WW 142...WW
   143...WW 144...
   
   DISCUSSION...AN ISOLATED SUPERCELL HAS RECENTLY INTENSIFIED NEAR THE
   WARM FRONT ACROSS N GA...WHILE OTHER STORMS ARE INCREASING SLOWLY
   JUST W OF THE ERN AL/GA BORDER.  BOUNDARY LAYER DEWPOINTS IN THE
   UPPER 50-LOWER 60S WILL BE SUFFICIENT TO SUPPORT SBCAPE OF AT LEAST
   500-1000 J/KG...WHILE THE ATLANTA VWP SHOWS A WIND PROFILE CONDUCIVE
   TO SUPERCELLS WITH A RISK FOR TORNADOES.  OTHERWISE...ISOLATED LARGE
   HAIL AND DAMAGING GUSTS CAN BE EXPECTED WITH THE STRONGER STORMS
   THROUGH TONIGHT.
   
   AVIATION...TORNADOES AND 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.