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URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 151

NWS STORM PREDICTION CENTER NORMAN OK

230 PM CDT MON APR 9 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH CENTRAL KANSAS

       NORTHWEST OKLAHOMA



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 230 PM UNTIL 900

PM 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 50 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF

MEDICINE LODGE KANSAS TO 55 MILES SOUTHEAST OF GAGE 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.



DISCUSSION...ISOLATED THUNDERSTORMS ARE EXPECTED TO FORM IN THE NEXT

1-2 HOURS OVER EXTREME SOUTHERN KS AND NORTHWEST OK...NEAR WEAK

SURFACE BOUNDARY.  MODERATE INSTABILITY AND BACKED LOW LEVEL WINDS

IN VICINITY OF BOUNDARY WILL PROMOTE SUPERCELL STRUCTURES CAPABLE OF

VERY LARGE HAIL...DAMAGING WINDS...AND A FEW TORNADOES.  THREAT

SHOULD PERSIST FOR A FEW HOURS BEFORE CONVECTIVE MODE TRANSITIONS

INTO MORE OF A HAIL/WIND THREAT.



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

500. MEAN STORM MOTION VECTOR 30025.





...HART

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