

367 

WWUS20 KWNS 110250

SEL9

SPC WW 110250

KSZ000-110900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 139

NWS STORM PREDICTION CENTER NORMAN OK

950 PM CDT SAT MAY 10 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND EASTERN KANSAS



* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 950 PM

  UNTIL 400 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST

NORTHWEST OF HUTCHINSON KANSAS TO 40 MILES SOUTHEAST OF TOPEKA

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

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).



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.



&&



OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES

SEVERE THUNDERSTORM WATCH NUMBER 137. WATCH NUMBER 137 WILL NOT

BE IN EFFECT AFTER 950 PM CDT. CONTINUE...WW 138...



DISCUSSION...A BAND OF SEVERE STORMS WILL LIKELY PERSIST FOR THE

NEXT SEVERAL HOURS AND DEVELOP NWD AS THE LOW-LEVEL JET AND WARM

ADVECTION STRENGTHEN ACROSS KS OVERNIGHT.  THE COMBINATION OF

INSTABILITY AND VERTICAL SHEAR WILL REMAIN FAVORABLE FOR

SUPERCELLS...WITH LARGE HAIL AND ISOLATED DAMAGING GUSTS THE MAIN

THREATS.



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 25020.





...THOMPSON

