WWUS20 KWNS 292054 SEL5 SPC WW 292054 ALZ000-LAZ000-MSZ000-CWZ000-300500- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 595...RESENT NWS STORM PREDICTION CENTER NORMAN OK 350 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 AFTERNOON FROM 350 PM UNTIL MIDNIGHT CDT. TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES NORTH NORTHWEST OF BATON ROUGE LOUISIANA TO 35 MILES EAST SOUTHEAST OF MOBILE ALABAMA. 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 594. WATCH NUMBER 594 WILL NOT BE IN EFFECT AFTER 350 PM CDT. DISCUSSION...CONVECTIVE BANDS TO THE EAST/NORTHEAST OF TS ISAAC ARE EXPECTED TO CONTINUE LIFTING NWD/NWWD FROM THE ADJACENT GULF COASTAL WATERS INTO SERN LA/SRN MS AND SWRN AL INTO THE EVENING. VAD WIND PROFILES AT KLIX/KMOB/KDGX SHOW 50-70 KT LOW LEVEL WINDS...VERY STRONG LOW LEVEL SHEAR IN THE LOWEST 1 KM...AND 150-300 M2/S2 SRH BASED ON OBSERVED STORM MOTIONS. THIS IS CONSISTENT WITH RADAR OBSERVATIONS OF SHALLOW/BRIEF SUPERCELLS EMBEDDED WITHIN THE CONVECTIVE BANDS WHICH WILL MAINTAIN A THREAT FOR ISOLATED TORNADOES INTO TONIGHT AS ISAAC MOVES SLOWLY NWWD ACROSS SRN LA. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 15050. ...WEISS