

273 

WWUS20 KWNS 300446

SEL6

SPC WW 300446

ALZ000-LAZ000-MSZ000-CWZ000-301300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 596

NWS STORM PREDICTION CENTER NORMAN OK

1140 PM CDT WED AUG 29 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       FAR SOUTHWEST ALABAMA

       SOUTHEAST LOUISIANA

       SOUTHERN MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 1140 PM

UNTIL 800 AM CDT.



TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS

LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHWEST OF

PINE BELT MISSISSIPPI TO 25 MILES WEST SOUTHWEST OF BOOTHVILLE

LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 595...



DISCUSSION...STRONG LOW TO MID-TROPOSPHERIC WIND FIELD CURRENTLY

OBSERVED IN ERN SEMI-CIRCLE OF ISAAC PER JACKSON/NEW ORLEANS/MOBILE

VADS WILL BE MAINTAINED OVERNIGHT AS CENTER OF SYSTEM SLOWLY MOVES

FROM NEAR BTR TO JUST SE OF ESF THROUGH 30/12Z.  DESPITE THE TIME OF

DAY...THE OVERLAP OF A VERY MOIST/LOW LCL BOUNDARY LAYER AND STRONG

LOW-LEVEL SHEAR WILL CONTINUE TO PROMOTE SMALL-DIAMETER SUPERCELLS

WITHIN MORE PROMINENT RAIN BANDS WITH AN ATTENDANT RISK FOR BRIEF

TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME

TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI

WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 16050.





...MEAD

