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WWUS20 KWNS 070209

SEL0

SPC WW 070209

KSZ000-MOZ000-OKZ000-070800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 250

NWS STORM PREDICTION CENTER NORMAN OK

910 PM CDT SUN MAY 6 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN KANSAS

       WESTERN MISSOURI

       CENTRAL AND EASTERN OKLAHOMA



EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 910 PM UNTIL

300 AM 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 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 70 MILES EAST NORTHEAST OF

EMPORIA KANSAS TO 30 MILES WEST OF MCALESTER 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.



OTHER WATCH INFORMATION...CONTINUE...WW 246...WW 247...WW

248...WW 249...



DISCUSSION...SCTD SHOWERS/STORMS HAVE DEVELOPED IN THE LAST HOUR

OVER CNTRL/ERN OK...POSSIBLY IN RESPONSE TO ASCENT PHASE OF A

GRAVITY WAVE EMANATING FROM WRN OK MCS.  GIVEN DISCRETE NATURE OF

UPDRAFTS...VERY MOIST LOW LEVEL ENVIRONMENT AND LENGTHENING OF LOW

LEVEL HODOGRAPHS IN RESPONSE TO NOCTURNAL STRENGTHENING OF

LLJ...POTENTIAL WILL EXIST FOR LOW LEVEL STORM ROTATION/POSSIBLE

TORNADOES.



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

500. MEAN STORM MOTION VECTOR 21030.





...CORFIDI

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