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WWUS20 KWNS 311232

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SPC WW 311232

LAZ000-MSZ000-TXZ000-CWZ000-311900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 551

NWS STORM PREDICTION CENTER NORMAN OK

730 AM CDT THU OCT 31 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHERN LOUISIANA

  SOUTHWESTERN MISSISSIPPI

  EXTREME SOUTHEAST TEXAS

  COASTAL WATERS



* EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 730 AM UNTIL

  200 PM CDT.



* PRIMARY THREATS INCLUDE...

  A FEW TORNADOES POSSIBLE

  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75

    MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES SOUTH SOUTHWEST OF

LAKE CHARLES LOUISIANA TO 30 MILES NORTH OF NATCHEZ MISSISSIPPI.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



DISCUSSION...GRADUALLY ORGANIZING BAND OF TSTMS IS EXPECTED TO POSE

RISK OF DAMAGING GUSTS AND POTENTIAL FOR A FEW TORNADOES AS IT MOVES

EWD INTO ENVIRONMENT CHARACTERIZED BY AT LEAST MARGINAL

BUOYANCY...INCREASING DEEP SHEAR FROM W-E WITH TIME...AND LARGE

LOW-LEVEL HODOGRAPHS PER PRECONVECTIVE RAOB/VWP.  REF SPC MESOSCALE

DISCUSSION 1989 FOR MORE INITIAL/NEAR-TERM DETAILS.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 25030.





...EDWARDS

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