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154 

WWUS20 KWNS 260741

SEL7

SPC WW 260741

KSZ000-OKZ000-261200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 187

NWS STORM PREDICTION CENTER NORMAN OK

240 AM CDT SUN APR 26 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST KANSAS

       NORTHERN OKLAHOMA



EFFECTIVE THIS SUNDAY MORNING FROM 240 AM UNTIL 700 AM CDT.



TORNADOES...HAIL TO 2 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 40 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH NORTHWEST OF

ENID OKLAHOMA TO 30 MILES SOUTHEAST OF CHANUTE KANSAS.  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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 186. WATCH NUMBER 186 WILL NOT BE IN EFFECT AFTER

240 AM CDT. CONTINUE...WW 185...



DISCUSSION...SMALL CLUSTER OF WAA-SUSTAINED SUPERCELLS HAS PERSISTED

SINCE SAT EVE OVER FAR NRN OK.  AREA VWP/PROFILER DATA...COUPLED

WITH FAIRLY RICH MOIST INFLOW...SUGGEST THAT ASSOCIATED TORNADO

THREAT MAY CONTINUE ANOTHER COUPLE HOURS OR SO. STORMS IN ERN PART

OF CLUSTER /IN ELK AND CHAUTAUQUA COUNTIES KS/ MAY DEVELOP SMALL

SCALE BOWING SEGMENTS WITH LOCALLY DMGG WIND.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 25025.





...CORFIDI

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