

646 

WWUS20 KWNS 101957

SEL8

SPC WW 101957

KSZ000-NEZ000-110300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 508

NWS STORM PREDICTION CENTER NORMAN OK

300 PM CDT THU SEP 10 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND NORTHERN KANSAS

  CENTRAL AND SOUTHERN NEBRASKA



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 300 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL

    EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS

AFTERNOON OVER SOUTHWEST NEB/NORTHWEST KS AND TRACK SOUTHEASTWARD

ACROSS THE WATCH AREA.  INITIAL STORMS WILL BE SUPERCELLULAR WITH A

RISK OF VERY LARGE HAIL AND DAMAGING WINDS.  THE RISK OF LOCALLY

DAMAGING WINDS SHOULD INCREASE THROUGH THE EVENING AS STORMS

ORGANIZE INTO BOWING SEGMENTS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH

SOUTHWEST OF NORTH PLATTE NEBRASKA TO 30 MILES EAST NORTHEAST OF

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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.



&&



AVIATION...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 28030.





...HART

