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189 

WWUS20 KWNS 012147

SEL5

SPC WW 012147

KSZ000-NEZ000-020500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 415

NWS STORM PREDICTION CENTER NORMAN OK

450 PM CDT WED JUN 1 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL KANSAS

       WESTERN AND CENTRAL NEBRASKA



EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 450 PM UNTIL MIDNIGHT CDT.



TORNADOES...HAIL TO 2.5 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 75 STATUTE

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

NORTH PLATTE NEBRASKA TO 15 MILES EAST OF CONCORDIA KANSAS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 411...WW 412...WW

413...WW 414...



DISCUSSION...TSTMS SHOULD CONTINUE TO INTENSIFY THIS EVENING INVOF

WARM FRONT EXTENDING FROM WRN NEB INTO E-CNTRL KS.  HERE...AIR MASS

IS STRONGLY TO EXTREMELY UNSTABLE WITH MLCAPE VALUES OF 3500-4500

J/KG.  WHEN COUPLED WITH PRONOUNCED VEERING OF WINDS WITH

HEIGHT...SETUP WILL FAVOR THE DEVELOPMENT OF SUPERCELLS CAPABLE OF

VERY LARGE HAIL...A FEW TORNADOES...AND DAMAGING WIND GUSTS.



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

SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

550. MEAN STORM MOTION VECTOR 24015.





...MEAD

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