

000 

WWUS20 KWNS 122022

SEL0

SPC WW 122022

ALZ000-FLZ000-GAZ000-CWZ000-130300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 390

NWS STORM PREDICTION CENTER NORMAN OK

325 PM CDT TUE JUN 12 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN ALABAMA

       MUCH OF FLORIDA PAN HANDLE

       MUCH OF SOUTHWEST GEORGIA

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 325 PM UNTIL

1000 PM CDT.



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 NORTH AND SOUTH OF A LINE FROM 15 MILES SOUTHWEST

OF EVERGREEN ALABAMA TO 10 MILES NORTH NORTHEAST OF VALDOSTA

GEORGIA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 385...WW 386...WW

387...WW 388...WW 389...



DISCUSSION...THUNDERSTORMS ALONG SEA BREEZE FRONT AND ACROSS PARTS

OF SERN AL WILL CONTINUE TO INCREASE IN NUMBER AND INTENSITY.  WITH

AIR MASS ACROSS MUCH OF WATCH BECOMING MODERATELY UNSTABLE AND

25-30KT OF DEEP LAYER SHEAR...SEVERE POTENTIAL WILL CONTINUE UNTIL

LATER THIS EVENING AS NEW STORMS DEVELOP ON OUTFLOW FROM CURRENT

ACTIVITY.



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 33015.





...HALES

