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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 194

NWS Storm Prediction Center Norman OK

235 PM MDT Tue May 19 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Idaho

  Western and central Montana



* Effective this Tuesday afternoon and evening from 235 PM until

  1000 PM MDT.



* Primary threats include...

  Scattered large hail events to 1.5 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Storms will continue to intensify through mid-afternoon

initially across southwest Montana and nearby northern Idaho. Over

time, storms are expected to spread across additional portions of

west-central Montana by evening. Some supercells and well-organized

bowing segments can be expected with large hail and severe-caliber

wind gusts possible.



The severe thunderstorm watch area is approximately along and 105

statute miles east and west of a line from 35 miles north of Havre

MT to 45 miles south southwest of Dillon MT. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU4).



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

1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 450. Mean storm motion vector

21025.



...Guyer

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