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WWUS20 KWNS 101456

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MIZ000-LMZ000-102200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 274

NWS Storm Prediction Center Norman OK

1100 AM EDT Wed Jun 10 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southwest and west central Michigan

  Lake Michigan



* Effective this Wednesday morning and evening from 1100 AM until

  600 PM EDT.



* Primary threats include...

  Widespread damaging winds and isolated significant gusts to 75

    mph likely

  Scattered large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Clusters of storms over Lake Michigan will spread inland

over southwest Lower Michigan in the next couple of hours, with

additional storm development likely farther east.  The storm

environment favors damaging winds with bowing segments or clusters,

along with isolated large hail and a possible tornado or two.



The severe thunderstorm watch area is approximately along and 40

statute miles east and west of a line from 85 miles north of Grand

Rapids MI to 10 miles south southeast of Kalamazoo MI. 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 65 knots. A

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

23045.



...Thompson

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