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000 

WWUS20 KWNS 020445

SEL0

SPC WW 020445

LAZ000-MSZ000-021200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 880

NWS STORM PREDICTION CENTER NORMAN OK

1145 PM CDT MON SEP 1 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN LOUISIANA

       SOUTHERN MISSISSIPPI



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 1145 PM

UNTIL 700 AM CDT.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...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 40 MILES SOUTH OF MONROE

LOUISIANA TO 40 MILES SOUTHEAST OF PINE BELT MISSISSIPPI.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU0).



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 878...



DISCUSSION...TS GUSTAV TRACKING SLOWLY NWWD ACROSS CNTRL/NRN LA

EARLY TODAY WITH FEEDER BAND CONVECTION EXPECTED TO CONTINUE TO

ROTATE AROUND THE CIRCULATION OVER THE MS DELTA/NERN LA. EFFECTIVE

SHEAR IN THE ERN SEMI-CIRCLE OF THE CYCLONE WILL REMAIN MORE THAN

ADEQUATE FOR PERSISTENT LOW LEVEL MESOCYCLONES IN STRONGER

QUASI-DISCRETE ELEMENTS EMBEDDED WITHIN THE LARGER RAIN SHIELD.

OVERALL TORNADO POTENTIAL WILL BE SOMEWHAT LIMITED BY LACK OF

BUOYANCY. HOWEVER... DEGREE OF SHEAR AND LOW LFC IN VERY MOIST

BOUNDARY LAYER ENVIRONMENT SUGGESTS THE THREAT IS SUFFICIENT ENOUGH

TO WARRANT A WATCH INTO EARLY TUESDAY MORNING.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

400. MEAN STORM MOTION VECTOR 16040.





...CARBIN

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