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WWUS20 KWNS 062042

SEL5

SPC WW 062042

COZ000-KSZ000-OKZ000-070300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 475

NWS STORM PREDICTION CENTER NORMAN OK

340 PM CDT TUE AUG 6 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHEAST COLORADO

  SOUTHWEST AND SOUTH CENTRAL KANSAS

  NORTHWESTERN OKLAHOMA



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 340 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS

    TO 80 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH

NORTHWEST OF ELKHART KANSAS TO 35 MILES NORTH NORTHEAST OF

MEDICINE LODGE KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE

THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 474...



DISCUSSION...ISOLATED SEVERE STORM DEVELOPMENT IS NOW UNDERWAY SOUTH

AND SOUTHWEST OF GOODLAND...IN THE PRESENCE OF STRONG INSTABILITY

AND MODEST DEEP LAYER SHEAR.  ADDITIONAL THUNDERSTORM DEVELOPMENT IS

EXPECTED ACROSS THE SOUTH CENTRAL HIGH PLAINS THROUGH THE REMAINDER

OF THE AFTERNOON...BECOMING FOCUSED NEAR/JUST NORTH OF A REMNANT

BAROCLINIC ZONE NEAR THE KANSAS/OKLAHOMA BORDER AREA.  THE EVOLUTION

OF AN ORGANIZED MESOSCALE CONVECTIVE SYSTEM NEAR THIS BOUNDARY

APPEARS POSSIBLE BY EARLY EVENING...WITH A BROADER SCALE DAMAGING

WIND THREAT...IN ADDITION TO THE RISK FOR SEVERE HAIL.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 27040.





...KERR

