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767 

WWUS20 KWNS 162009

SEL3

SPC WW 162009

IAZ000-NEZ000-170300-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 303

NWS STORM PREDICTION CENTER NORMAN OK

310 PM CDT MON JUN 16 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* TORNADO WATCH FOR PORTIONS OF

  WEST-CENTRAL IOWA

  NORTH-CENTRAL AND NORTHEAST NEBRASKA



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 310 PM UNTIL

  1000 PM CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



* PRIMARY THREATS INCLUDE...

  SEVERAL TORNADOES AND A FEW INTENSE TORNADOES LIKELY

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 3 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF

AINSWORTH NEBRASKA TO 20 MILES EAST NORTHEAST OF TEKAMAH

NEBRASKA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 302...



DISCUSSION...THE 19Z OMA SOUNDING SAMPLED A VOLATILE ENVIRONMENT

WITH 4000 J/KG MLCAPE...60 KT OF EFFECTIVE BULK SHEAR...AND 500

EFFECTIVE SRH. ISOLATED TO WIDELY SCATTERED SUPERCELLS ARE EXPECTED

TO DEVELOP ALONG HEATED OUTFLOW BOUNDARIES WITH A RISK FOR VERY

LARGE HAIL AND DAMAGING TORNADOES...A FEW OF WHICH COULD BE

SIGNIFICANT.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

600. MEAN STORM MOTION VECTOR 23025.





...MEAD

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