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WWUS20 KWNS 231925

SEL7

SPC WW 231925

COZ000-NEZ000-SDZ000-WYZ000-240300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 117

NWS Storm Prediction Center Norman OK

130 PM MDT Wed May 23 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeast Colorado

  Western Nebraska

  Western South Dakota

  Eastern Wyoming



* Effective this Wednesday afternoon and evening from 130 PM

  until 900 PM MDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Thunderstorms will continue to intensify over east-central

Colorado/Wyoming and spread northeastward across the watch area this

afternoon and evening.  The strongest cells will pose a risk of

large hail and damaging wind gusts.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 60 miles southwest of

Sidney NE to 105 miles north northwest of Rapid City SD. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU7).



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.



&&



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 500. Mean storm motion vector

23030.



...Hart

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