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WWUS20 KWNS 072239

SEL9

SPC WW 072239

IAZ000-KSZ000-MOZ000-NEZ000-080600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 399

NWS STORM PREDICTION CENTER NORMAN OK

540 PM CDT MON JUL 7 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHWEST IOWA

  NORTHERN KANSAS

  NORTHWEST MISSOURI

  CENTRAL AND EASTERN NEBRASKA



* EFFECTIVE THIS MONDAY AFTERNOON AND TUESDAY MORNING FROM 540 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  WIDESPREAD DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75

    MPH LIKELY

  WIDESPREAD LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2.5

    INCHES IN DIAMETER LIKELY



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST OF

BROKEN BOW NEBRASKA TO 35 MILES EAST SOUTHEAST OF FALLS CITY

NEBRASKA.  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...CONTINUE...WW 397...WW 398...



DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INTENSIFY OVER NEBRASKA

THIS EVENING AND TRACK RAPIDLY SOUTHEASTWARD ACROSS THE WATCH AREA.

FAVORABLE SHEAR PROFILES...COUPLED WITH STRONG INSTABILITY AND AN

APPROACHING UPPER TROUGH MAY RESULT IN MULTIPLE BOWS/CLUSTERS OF

SEVERE STORMS CAPABLE OF DAMAGING WINDS AND VERY LARGE HAIL.



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

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

MOTION VECTOR 31040.





...HART

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