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WWUS20 KWNS 072147

SEL1

SPC WW 072147

MTZ000-SDZ000-WYZ000-080500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 161

NWS Storm Prediction Center Norman OK

350 PM MDT Thu Jun 7 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southeast Montana

  Western South Dakota

  Northeast Wyoming



* Effective this Thursday afternoon and evening from 350 PM until

  1100 PM MDT.



* Primary threats include...

  Scattered large hail likely with isolated very large hail events

    to 2 inches in diameter possible

  Scattered damaging wind gusts to 70 mph likely

  A tornado or two possible



SUMMARY...Thunderstorms will increase in coverage across the watch

area late this afternoon and evening with scattered severe storms

possible.  Large hail and damaging winds are possible.



The severe thunderstorm watch area is approximately along and 110

statute miles north and south of a line from 60 miles northwest of

Sheridan WY to 50 miles east northeast of Rapid City 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 160...



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

26030.



...Hart

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