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450 

WWUS20 KWNS 090149

SEL2

SPC WW 090149

IAZ000-MOZ000-NEZ000-090800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 482

NWS STORM PREDICTION CENTER NORMAN OK

850 PM CDT SAT AUG 8 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHWEST IOWA

  NORTHWEST MISSOURI

  SOUTHEAST NEBRASKA



* EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 850 PM

  UNTIL 300 AM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...DEVELOPING CLUSTER OF STORMS IN FAR SE NEB WILL LIKELY

SPREAD EWD OVER SW IA/NW MO INTO THE OVERNIGHT HOURS.  A COUPLE OF

SUPERCELLS WILL BE POSSIBLE THE NEXT FEW HOURS...ALONG WITH AN

ATTENDANT RISK FOR AN ISOLATED TORNADO...BUT THE PRIMARY THREATS

WILL BE DAMAGING WINDS/LARGE HAIL AS STORMS GROWN INTO AN MCS

OVERNIGHT.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

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

NORTHWEST OF FALLS CITY NEBRASKA TO 25 MILES EAST NORTHEAST OF

LAMONI IOWA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 481...



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 27025.





...THOMPSON

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