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601 

WWUS20 KWNS 242236

SEL7

SPC WW 242236

KSZ000-NEZ000-OKZ000-TXZ000-250600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 357

NWS STORM PREDICTION CENTER NORMAN OK

535 PM CDT MON JUN 24 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN AND CENTRAL KANSAS

  SOUTH CENTRAL NEBRASKA

  NORTHWEST OKLAHOMA AND THE OKLAHOMA PANHANDLE

  THE NORTHERN HALF OF THE TEXAS PANHANDLE



* EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 535 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS WITH A FEW SIGNIFICANT GUSTS TO 75

    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 75

STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST

NORTHWEST OF HASTINGS NEBRASKA TO 20 MILES EAST SOUTHEAST OF

BORGER TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 354...WW 355...WW 356...



DISCUSSION...TSTMS EXPECTED TO INCREASE/DEVELOP OVER THE NEXT FEW

HOURS OVER WW AREA...IN ZONE OF DESTABILIZATION AND ASCENT

DOWNSTREAM FROM LOW AMPLITUDE UPR IMPULSE. COMBINATION OF STRONG

INSTABILITY...MODERATE WSWLY DEEP SHEAR...AND STEEP LOW-LVL LAPSE

RATES IN WEAKLY CONFLUENT ENVIRONMENT SUGGEST LIKELIHOOD FOR

CLUSTERS OF SUSTAINED STORMS/SUPERCELLS WITH SVR HAIL AND WIND.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 24030.





...CORFIDI

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