

401 

WWUS20 KWNS 211511

SEL7

SPC WW 211511

LAZ000-MSZ000-CWZ000-212300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 97

NWS STORM PREDICTION CENTER NORMAN OK

1010 AM CDT WED MAR 21 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST AND NORTHEAST LOUISIANA

       CENTRAL AND SOUTHERN MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1010 AM UNTIL

600 PM 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 70 STATUTE

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

LOUISIANA TO 40 MILES NORTHWEST OF JACKSON MISSISSIPPI.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 96. WATCH NUMBER 96 WILL NOT BE IN EFFECT AFTER 1010

AM CDT.



DISCUSSION...BAND OF STRONG/SEVERE STORMS FROM NERN LA INTO SERN LA

IS EXPECTED TO CONTINUE MOVING SLOWLY EWD THIS AFTERNOON.  RADAR HAS

INDICATED A SERIES OF EMBEDDED SUPERCELLS/LEWP STRUCTURES WITHIN THE

BAND...AND POTENTIAL FOR SEVERE STORMS WILL CONTINUE THIS AFTERNOON

AS THE LOW LEVEL ENVIRONMENT WARMS AND SLOWLY MOISTENS.  VWP FROM

KLIX SHOWS 40-50 KT WINDS IN THE LOWEST 1-2 KM THAT VEER WITH HEIGHT

RESULTING IN STRONG LOW LEVER SHEAR/SRN SUPPORTIVE OF  SUPERCELL

STRUCTURES CAPABLE OF PRODUCING DAMAGING WIND GUSTS AND  A FEW

TORNADOES.



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.





...WEISS

