SPC Severe Thunderstorm Watch 376

WW 376 SEVERE TSTM KS MO NE 271330Z – 272100Z

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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