

337 

WWUS20 KWNS 152144

SEL5

SPC WW 152144

GAZ000-160400-



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.





...THOMPSON

