

000 

WWUS20 KWNS 241801

SEL7

SPC WW 241801

OKZ000-250000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 347

NWS STORM PREDICTION CENTER NORMAN OK

105 PM CDT SAT MAY 24 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF NORTHERN OKLAHOMA



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 105 PM UNTIL

700 PM CDT.



TORNADOES...HAIL TO 3 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 50 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST SOUTHWEST OF

ENID OKLAHOMA TO 50 MILES NORTHEAST OF CHANDLER OKLAHOMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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 346...



DISCUSSION...THUNDERSTORMS EXPECTED TO INCREASE RAPIDLY ALONG

INTERSECTION OF E/W OUTFLOW BOUNDARY AND N/S DRY LINE.  WITH A VERY

TO EXTREMELY UNSTABLE WARM SECTOR...MLCAPES TO 4000 J/KG...AND

ENHANCED LOW LEVEL SHEAR VICINITY BOUNDARIES...SUPERCELLS ARE LIKELY

INCLUDING LARGE HAIL AND POSSIBLE TORNADOES.



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

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

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

600. MEAN STORM MOTION VECTOR 25020.





...HALES

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