

706 

WWUS20 KWNS 020609

SEL5

SPC WW 020609

LAZ000-MSZ000-CWZ000-021100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 755

NWS STORM PREDICTION CENTER NORMAN OK

105 AM CDT FRI OCT 2 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND SOUTHERN LOUISIANA

       FAR SOUTHWEST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS FRIDAY MORNING FROM 105 AM UNTIL 600 AM CDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 15 MILES NORTHWEST OF

ALEXANDRIA LOUISIANA TO 40 MILES SOUTH SOUTHEAST OF INTRACOASTAL

CITY LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 753...WW 754...



DISCUSSION...SCTD TO NUMEROUS TSTMS ARE FORMING ALONG NNW-SSE

ORIENTED WEAK FRONT OVER CNTRL AND S CNTRL LA.  BOUNDARY APPEARS TO

MARK LEADING EDGE OF VERY MOIST LOW LVL AIR /DEWPOINTS IN THE MID

70S F/ EXTENDING EWD FROM SE TX.  SLIGHTLY ENHANCED WSWLY LLJ AHEAD

OF NE-SW SQLN NOW MOVING SE ACROSS E TX/CNTRL LA MAY PROVIDE

SUFFICIENT LOW LVL SHEAR TO SUPPORT STORM ROTATION AND A THREAT FOR

BRIEF TORNADOES WITH STORMS ALONG BOUNDARY GIVEN LOW LCLS...MODERATE

DEEP WNWLY SHEAR....AND LIKELIHOOD FOR STORM INTERACTIONS WITH SQLN.



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

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

GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 26025.





...CORFIDI

