

000 

WWUS20 KWNS 121627

SEL1

SPC WW 121627

LAZ000-MSZ000-TXZ000-CWZ000-122200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 51

NWS STORM PREDICTION CENTER NORMAN OK

1025 AM CST TUE FEB 12 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN LOUISIANA

       SOUTHERN MISSISSIPPI

       FAR SOUTHEAST TEXAS

       COASTAL WATERS



EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 1025 AM UNTIL

400 PM CST.



TORNADOES...HAIL TO 1.5 INCHES 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 35 MILES SOUTHWEST OF LAKE

CHARLES LOUISIANA TO 35 MILES EAST NORTHEAST OF SLIDELL

LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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...ORGANIZED/ARCING LINE OF CONVECTION CONTINUES MOVING

SEWD INTO SLOWLY MOISTENING/DESTABILIZING BOUNDARY LAYER.  LINE

SHOULD REMAIN ORGANIZED -- AND CAPABLE OF PRODUCING LOCALLY-DAMAGING

WINDS AND MARGINAL HAIL.  WITH TIME...ISOLATED CELLS MAY ALSO

DEVELOP IN ADVANCE OF THE CONVECTIVE LINE...AND THUS WITH FAVORABLE

LOW-LEVEL VEERING/SHEAR INDICATED BY AREA VWPS...A TORNADO THREAT

ALSO APPEARS POSSIBLE.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 29035.





...GOSS

