

191 

WWUS20 KWNS 240147

SEL3

SPC WW 240147

KSZ000-NEZ000-240900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 353

NWS STORM PREDICTION CENTER NORMAN OK

835 PM CDT SUN JUN 23 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN AND NORTHERN KANSAS

  SOUTHERN AND CENTRAL NEBRASKA



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 835 PM

  UNTIL 400 AM CDT.



* 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 POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTH OF

COLUMBUS NEBRASKA TO 25 MILES NORTHWEST OF GOODLAND KANSAS.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



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...CONTINUE...WW 352...



DISCUSSION...WDLY SCTD TSTMS EXPECTED TO FORM/INCREASE THROUGH LATE

EVE ALONG AND N OF WSW-ENE BOUNDARY STALLED OVER WRN AND CNTRL KS.

DEVELOPMENT WILL BE FOSTERED BY NOCTURNAL STRENGTHENING OF LLJ AND

BY INCREASING UPR DIVERGENCE ASSOCIATED WITH IMPULSE NOW IN CO. AT

THE SAME TIME...A SMALL MCS OR SQLN MAY EVOLVE FROM THE STORMS NOW

IN ERN CO. THIS ACTIVITY SHOULD MOVE/DEVELOP EWD INTO WRN KS AS THE

STORMS ENCOUNTER INCREASINGLY MOIST LOW-LVL ELY FLOW.

LARGE HAIL AND DMGG WIND WILL BE POSSIBLE GIVEN CONTINUING PRESENCE

OF MUCAPE AOA 1500 J/KG. IN ADDITION...WHILE NOCTURNAL INCREASE IN

SFC-BASED CIN AND MODEST 700 MB FLOW SHOULD LIMIT OVERALL RISK...A

TORNADO OR TWO COULD OCCUR ALONG THE SQLN AND/OR WITH ANY

LONGER-LASTING DISCRETE CELLS THAT FORM FARTHER EAST.



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 550. MEAN STORM

MOTION VECTOR 24025.





...CORFIDI

