

000 

WWUS20 KWNS 070454

SEL1

SPC WW 070454

OKZ000-TXZ000-071000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 251

NWS STORM PREDICTION CENTER NORMAN OK

1155 PM CDT SUN MAY 6 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       WESTERN AND CENTRAL OKLAHOMA

       WESTERN NORTH TEXAS



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1155 PM UNTIL

500 AM CDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 40 MILES SOUTH OF ALTUS

OKLAHOMA TO CHANDLER 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...CONTINUE...WW 248...WW 249...WW 250...



DISCUSSION...SCTD SHOWERS/TSTMS HAVE DEVELOPED IN THE PAST HOUR IN

MOIST/UNSTABLE ENVIRONMENT ALONG THE I-44 CORRIDOR.  WEAKLY

CONFLUENT NEAR-SFC FLOW...RICH MOISTURE...PROXIMITY OF 50 KT LLJ AND

DISCRETE NATURE OF CONVECTION SUGGEST POTENTIAL FOR ISOLATED

TORNADOES.



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

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 21030.





...CORFIDI

