

691 

WWUS20 KWNS 250423

SEL1

SPC WW 250423

LAZ000-TXZ000-250900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 61

NWS STORM PREDICTION CENTER NORMAN OK

1125 PM CDT TUE MAR 24 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL LOUISIANA

       A SMALL PART OF EASTERN TEXAS



EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 1125 PM

UNTIL 400 AM 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 40 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST OF FORT POLK

LOUISIANA TO 35 MILES NORTH NORTHEAST OF NATCHEZ MISSISSIPPI.

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...THUNDERSTORMS HAVE INTENSIFIED LATE THIS EVENING ALONG

AND AHEAD OF SURFACE COLD FRONT MOVING INTO ERN TX/NRN LA.

PRE-FRONTAL AIR MASS REMAINS MARGINALLY UNSTABLE TO SURFACE-BASED

PARCELS...BUT LOW-DEEP LAYER SHEAR IS QUITE STRONG.  APPEARS THREAT

OF ISOLATED TORNADOES AND/OR WIND DAMAGE MAY ACCOMPANY THIS SMALL

LINE OF STORMS ENEWD TOWARDS THE LOWER MS RIVER VALLEY AS STORMS

ROOT NEAR THE SURFACE.  ADDITIONAL DEVELOPMENT MAY OCCUR AHEAD OF

THE FRONT FROM FAR ERN TX INTO CENTRAL LA THROUGH THE EARLY

NIGHTTIME HOURS.



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 26035.





...EVANS

