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654 

WWUS20 KWNS 060108

SEL9

SPC WW 060108

IAZ000-NEZ000-060600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 329

NWS STORM PREDICTION CENTER NORMAN OK

810 PM CDT TUE JUL 5 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN IOWA

  EASTERN NEBRASKA



* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 810 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



SUMMARY...A CLUSTER OF STORMS WILL LIKELY CONTINUE TO SPREAD

EAST-NORTHEASTWARD THIS EVENING ACROSS EAST-CENTRAL/NORTHEAST

NEBRASKA AND PERHAPS EVENTUALLY WESTERN IOWA. THE OBSERVED EVENING

SOUNDING FROM OMAHA SAMPLED A HIGHLY UNSTABLE ENVIRONMENT WITH AMPLE

LOW-LEVEL MOISTURE AND VERY STEEP LAPSE RATES.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 40

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST

SOUTHWEST OF NORFOLK NEBRASKA TO 30 MILES EAST OF TEKAMAH

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 323...WW 324...WW

325...WW 326...WW 327...WW 328...



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

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

MOTION VECTOR 24025.





...GUYER

