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427 

WWUS20 KWNS 011925

SEL4

SPC WW 011925

MTZ000-020100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 474

NWS Storm Prediction Center Norman OK

130 PM MDT Mon Jul 1 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Montana



* Effective this Monday afternoon and evening from 130 PM until

  700 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...Multiple discrete cells should intensify east from

north-central Montana, before eventually consolidating into a

cluster across northeast Montana. Large hail and severe wind gusts

will be the primary hazards.



The severe thunderstorm watch area is approximately along and 70

statute miles north and south of a line from 40 miles northwest of

Great Falls MT to 20 miles south southeast of Glasgow 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

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

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

27035.



...Grams

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