

785 

WWUS20 KWNS 240644

SEL9

SPC WW 240644

ARZ000-LAZ000-OKZ000-TXZ000-241300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 89

NWS STORM PREDICTION CENTER NORMAN OK

145 AM CDT SAT APR 24 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST ARKANSAS

       NORTHERN LOUISIANA

       SOUTHEAST OKLAHOMA

       NORTHEAST TEXAS



EFFECTIVE THIS SATURDAY MORNING FROM 145 AM UNTIL 800 AM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 110 STATUTE

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

LUFKIN TEXAS TO 55 MILES NORTHEAST OF TEXARKANA ARKANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU9).



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 82...WW 83...WW 86...WW

87...WW 88...



DISCUSSION...DEVELOPING BOW ECHO OVER EAST CENTRAL TX WILL TRACK

EASTWARD INTO WATCH AREA THIS MORNING...WITH THE RISK OF SIGNIFICANT

DAMAGING WINDS.  MEANWHILE...POTENTIAL EXISTS FOR ISOLATED STORMS TO

FORM AHEAD OF THE MAIN ACTIVITY...WITH CONDITIONS FAVORABLE FOR

SUPERCELLS AND ISOLATED TORNADOES.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 24040.





...HART

