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000 

WWUS20 KWNS 171608

SEL0

SPC WW 171608

ARZ000-LAZ000-TXZ000-CWZ000-172300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 710

NWS STORM PREDICTION CENTER NORMAN OK

1110 AM CDT WED OCT 17 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST ARKANSAS

       MUCH OF WESTERN AND NORTHERN LOUISIANA

       PARTS OF EASTERN TEXAS

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1110 AM UNTIL

600 PM CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH OF TEXARKANA

ARKANSAS TO 65 MILES SOUTHWEST OF INTRACOASTAL CITY LOUISIANA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 708...WW 709...



DISCUSSION...VERY MOIST AIRMASS ALONG WITH FAVORABLE LOW LEVEL SHEAR

PROFILES WILL SUPPORT INCREASING TORNADIC SUPERCELL POTENTIAL

THROUGH THE AFTERNOON.  STORMS WILL INCREASE NWD THRU WATCH AREA AS

AIR MASS CONTINUES TO DESTABILIZE.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 23025.





...HALES

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