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535 

WWUS20 KWNS 102154

SEL4

SPC WW 102154

LAZ000-TXZ000-110500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 24

NWS STORM PREDICTION CENTER NORMAN OK

350 PM CST WED MAR 10 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN LOUISIANA

       NORTHEAST TEXAS



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 350 PM UNTIL

1100 PM CST.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

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



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTH OF

TYLER TEXAS TO 5 MILES NORTHEAST OF MONROE LOUISIANA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 20. WATCH NUMBER 20 WILL NOT BE

IN EFFECT AFTER 350 PM CST. CONTINUE...WW 21...WW 22...WW 23...



DISCUSSION...THE SEVERE THREAT IS EXPECTED TO INCREASE EWD ACROSS

EAST TX LATE THIS AFTERNOON AND INTO NWRN LA THIS EVENING. A THREAT

FOR SUPERCELLS WITH LARGE HAIL AND WIND DAMAGE WILL DEVELOP WITH THE

THREAT CONTINUING THROUGH MUCH OF THE EVENING. AN ISOLATED TORNADO

THREAT WILL ALSO BE POSSIBLE WITH THE MORE PERSISTENT ROTATING

STORMS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 25035.





...BROYLES/HALES

