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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 276

NWS STORM PREDICTION CENTER NORMAN OK

355 PM MDT TUE JUN 4 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EASTERN COLORADO

  WESTERN KANSAS



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 355 PM UNTIL

  1100 PM MDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH

NORTHWEST OF GOODLAND KANSAS TO 5 MILES EAST SOUTHEAST OF ELKHART

KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



&&



DISCUSSION...THUNDERSTORM INITIATION IS UNDERWAY NEAR THE COLORADO

FRONT RANGE...AND FURTHER DEVELOPMENT AND UPSCALE CONVECTIVE GROWTH

IS EXPECTED LATE THIS AFTERNOON AND EVENING...AS IT SPREADS EASTWARD

INTO THE HIGH PLAINS...WITHIN A MODERATELY UNSTABLE AND STRONGLY

SHEARED ENVIRONMENT.  A FEW SUPERCELLS ARE LIKELY BEFORE ACTIVITY

DEVELOPS INTO A CONSOLIDATING AND ORGANIZING CLUSTER...ACCOMPANIED

BY AN INCREASING RISK FOR DAMAGING WIND GUSTS...IN ADDITION TO THE

RISK FOR LARGE HAIL.  ONE OR TWO...MAINLY RELATIVELY

SHORT-LIVED...TORNADOES MAY NOT BE COMPLETELY OUT OF THE QUESTION.



AVIATION...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 29020.





...KERR

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