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WWUS20 KWNS 272358

SEL6

SPC WW 272358

MTZ000-280700-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 456

NWS Storm Prediction Center Norman OK

600 PM MDT Thu Jun 27 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  South-central and Northeast Montana



* Effective this Thursday night and Friday morning from 600 PM

  until 100 AM MDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated very large hail events to 2.5 inches in diameter

    possible

  A tornado or two possible



SUMMARY...A broken band/cluster of storms including a few supercells

will continue generally northeastward through the evening. While

some tornado risk may exist across south-central/east-central

Montana early this evening, the prevalent scenario should be an

increasing risk for damaging winds along with hail.



The severe thunderstorm watch area is approximately along and 70

statute miles north and south of a line from 25 miles north

northeast of Sidney MT to 30 miles north northwest of Lewistown MT.

For a complete depiction of the watch see the associated watch

outline update (WOUS64 KWNS WOU6).



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 454...WW 455...



AVIATION...A few severe thunderstorms with hail surface and aloft to

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

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

24035.



...Guyer

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