Thursday, August 30, 2012

WATCHES: Tornado Watch Number 596

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

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