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085 

WWUS20 KWNS 271334

SEL6

SPC WW 271334

KSZ000-MOZ000-NEZ000-272100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 376

NWS STORM PREDICTION CENTER NORMAN OK

830 AM CDT THU JUN 27 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  NORTHEAST AND EAST CENTRAL KANSAS

  NORTHWEST AND WEST CENTRAL MISSOURI

  SOUUTHEASTERN NEBRASKA



* EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 830 AM UNTIL

  400 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL LARGE HAIL EVENTS LIKELY WITH A FEW VERY LARGE HAIL

    EVENTS TO 4 INCHES IN DIAMETER POSSIBLE

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH

NORTHEAST OF BEATRICE NEBRASKA TO 30 MILES SOUTH SOUTHEAST OF

OLATHE 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...ISOLATED INTENSE CONVECTIVE DEVELOPMENT IS ALREADY

UNDERWAY ACROSS SOUTHEAST NEBRASKA...WHICH HAS ALREADY PRODUCED A

REPORT OF 4+ INCH DIAMETER HAIL.  THIS APPEARS TO BE OCCURRING

WITHIN A ZONE OF ENHANCED LOWER/MID TROPOSPHERIC WARM ADVECTION ON

THE EDGE OF STRONGLY CAPPING ELEVATED MIXED LAYER AIR OVER THE

CENTRAL AND SOUTHERN PLAINS.  FURTHER DEVELOPMENT APPEARS PROBABLE

DURING THE NEXT FEW HOURS...WITH THE UPSCALE GROWTH OF A LARGER

CONVECTIVE CLUSTER POSSIBLE BY MIDDAY.  AS THIS OCCURS...MODESTLY

STRONG NORTHWESTERLY 500 MB FLOW WILL CONTRIBUTE TO SOUTHEASTWARD

PROPAGATION.  ACTIVITY MAY PROGRESS THROUGH THE KANSAS CITY AND

TOPEKA AREAS BY 17-18Z...WITH AN INCREASING RISK FOR DAMAGING WIND

GUSTS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 31030.





...KERR

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