

000 

WWUS20 KWNS 171924

SEL1

SPC WW 171924

KSZ000-OKZ000-180300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 711

NWS STORM PREDICTION CENTER NORMAN OK

225 PM CDT WED OCT 17 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTH CENTRAL KANSAS

       MUCH OF OKLAHOMA



EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 225 PM UNTIL

1000 PM CDT.



TORNADOES...HAIL TO 2 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 60 MILES EAST NORTHEAST OF

MEDICINE LODGE KANSAS TO 15 MILES SOUTHWEST OF DURANT OKLAHOMA.

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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 708. WATCH NUMBER 708 WILL NOT BE IN EFFECT AFTER

225 PM CDT. CONTINUE...WW 709...WW 710...



DISCUSSION...SEVERE THUNDERSTORMS EXPECTED TO REDEVELOP ALONG AND E

OF DRY LINE WRN OK. WITH STRONG SHEAR PROFILES IN PLACE AND AIR MASS

REMAINING MDTLY UNSTABLE...SUPERCELLS INCLUDING TORNADOES ARE

EXPECTED TO DEVELOP AND SPREAD EWD AHEAD OF VIGOROUS UPPER TROUGH.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 23045.





...HALES

