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064 

WWUS20 KWNS 111829

SEL5

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MIZ000-WIZ000-LEZ000-LHZ000-LMZ000-120300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 645

NWS Storm Prediction Center Norman OK

230 PM EDT Wed Sep 11 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Southern Lower Michigan

  Southern Wisconsin

  Lake Erie

  Lake Huron

  Lake Michigan



* Effective this Wednesday afternoon and evening from 230 PM

  until 1100 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...Thunderstorms are expected to intensify across southern

Wisconsin and the southern half of Lower Michigan this afternoon,

with multiple rounds of strong to severe storms.  Damaging winds

will be the main threat in the most intense cells.



The severe thunderstorm watch area is approximately along and 55

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

Clemens MI to 10 miles north of Lonerock WI. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU5).



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 500. Mean storm motion vector

28025.



...Hart

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