

000 

WWUS20 KWNS 302249

SEL0

SPC WW 302249

OKZ000-310400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 140

NWS STORM PREDICTION CENTER NORMAN OK

550 PM CDT SUN MAR 30 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF WESTERN AND CENTRAL OKLAHOMA



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 550 PM UNTIL

1100 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 EAST AND WEST OF A LINE FROM 45 MILES NORTH OF ENID

OKLAHOMA TO 30 MILES SOUTHEAST OF ALTUS OKLAHOMA.  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.



DISCUSSION...THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG FRONTAL

CONVERGENCE IN SWRN OK AS CAP HAS WEAKENED SUFFICIENTLY.  WITH

MLCAPES ABOVE 2500 J/KG AND FAVORABLE VEERING SHEAR PROFILES

SUPERCELLS ACCOMPANIED BY LARGE HAIL AND POSSIBLE TORNADOES WILL BE

A THREAT THROUGH THE EVENING AS STORMS DEVELOP NEWD ACROSS WRN OK.



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

550. MEAN STORM MOTION VECTOR 24020.





...HALES

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