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746 

WWUS20 KWNS 210101

SEL4

SPC WW 210101

LAZ000-TXZ000-CWZ000-210500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 94

NWS STORM PREDICTION CENTER NORMAN OK

800 PM CDT TUE MAR 20 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST LOUISIANA

       SOUTHEAST TEXAS

       COASTAL WATERS



EFFECTIVE THIS TUESDAY NIGHT FROM 800 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 1 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 30 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES WEST NORTHWEST OF

FORT POLK LOUISIANA TO 25 MILES SOUTHEAST OF PORT ARTHUR TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 93...



DISCUSSION...ROTATING STORMS CONTINUE TO FORM OFF THE TX/LA COAST

AND TRACK INLAND ROUGHLY ALONG THE SABINE RIVER.  LCH VAD PROFILE

MAINTAINS VERY STRONG LOW LEVEL VERTICAL SHEAR...AND DEWPOINTS IN

THE UPPER 60S COUPLED WITH EXTENT OF LIGHTNING ACTIVITY SUGGEST

SUFFICIENT INSTABILITY FOR A RISK OF A TORNADO DEVELOPMENT THROUGH

THE EVENING.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 20035.





...HART

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