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WWUS20 KWNS 152356

SEL6

SPC WW 152356

LAZ000-MSZ000-TXZ000-CWZ000-160700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 886

NWS STORM PREDICTION CENTER NORMAN OK

555 PM CST TUE NOV 15 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST AND CENTRAL LOUISIANA

       SOUTHWEST MISSISSIPPI

       EXTREME SOUTHEAST TEXAS

       COASTAL WATERS



EFFECTIVE THIS TUESDAY AFTERNOON AND WEDNESDAY MORNING FROM 555

PM UNTIL 100 AM CST.



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 80 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF ALEXANDRIA

LOUISIANA TO 30 MILES SOUTHWEST OF INTRACOASTAL CITY 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.



DISCUSSION...BROKEN BAND OF STRONG/SEVERE STORMS WILL CONTINUE

SPREADING EWD/NEWD FROM SE TX INTO SW/W CENTRAL LA THIS EVENING...IN

ADVANCE OF A MIDLEVEL TROUGH EJECTING NEWD OVER THE UPPER TX COAST.

OTHER DISCRETE STORMS SHOULD ALSO CONTINUE TO DEVELOP ALONG THE

MOIST AXIS INTO S CENTRAL LAT.  A MOIST LOW-LEVEL ENVIRONMENT WILL

MAINTAIN WEAK-MODERATE INSTABILITY THROUGH THE EARLY OVERNIGHT

HOURS...AND DEEP-LAYER SHEAR WILL BE FAVORABLE FOR SUPERCELLS.  THE

STRONGER STORMS WILL POSE A RISK FOR ISOLATED DAMAGING GUSTS...AS

WELL AS A TORNADO OR TWO GIVEN EFFECTIVE SRH OF 150-250 M2/S2.



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 500.

MEAN STORM MOTION VECTOR 23025.





...THOMPSON

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