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WWUS20 KWNS 162050

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NEZ000-SDZ000-WYZ000-170500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 181

NWS Storm Prediction Center Norman OK

250 PM MDT Sat Jun 16 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern and western Nebraska

  Western and central South Dakota

  Far southeast Wyoming



* Effective this Saturday afternoon and evening from 250 PM until

  1100 PM MDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 80

    mph possible

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  A tornado or two possible



SUMMARY...Scattered thunderstorms will develop along a nearly

stationary front from parts of western and northern Nebraska into

central South Dakota, while additional storms may progress from

southeast Wyoming across the Nebraska Panhandle into western South

Dakota. Large hail and severe wind gusts are the primary hazards,

although a tornado or two is possible across central South Dakota.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 50 miles south of

Scottsbluff NE to 80 miles north northeast of Pierre SD. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



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 180...



AVIATION...A few severe thunderstorms with hail surface and aloft to

2.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

21030.



...Grams

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