

980 

WWUS20 KWNS 071910

SEL8

SPC WW 071910

MTZ000-WYZ000-080300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 338

NWS Storm Prediction Center Norman OK

115 PM MDT Tue Jul 7 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Eastern Montana

  North Central Wyoming



* Effective this Tuesday afternoon and evening from 115 PM until

  900 PM MDT.



* Primary threats include...

  Widespread damaging winds and isolated significant gusts to 80

    mph likely

  Widespread large hail and isolated very large hail events to 3

    inches in diameter likely

  A tornado or two possible



SUMMARY...Thunderstorms will intensify over central Montana this

afternoon and spread rapidly eastward across the watch area.  Severe

storms capable of very large hail, damaging winds, and perhaps a

tornado or two are expected.



The severe thunderstorm watch area is approximately along and 115

statute miles north and south of a line from 55 miles west of

Lewistown MT to 20 miles south southeast of Sidney MT. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU8).



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

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

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

26035.



...Hart

