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WWUS20 KWNS 131842

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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 652

NWS Storm Prediction Center Norman OK

245 PM EDT Fri Sep 13 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeast Indiana

  Southeast Lower Michigan

  Northwest Ohio

  Lake Erie

  Lake Huron



* Effective this Friday afternoon and evening from 245 PM until

  900 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Scattered thunderstorms developing from northeast Indiana

to southeast Lower Michigan should spread east-northeast through the

rest of the afternoon into early evening. Scattered damaging winds

are the main threat, but a tornado or two will also be possible

across southeast Lower Michigan through late afternoon.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 40 miles southwest of

Findlay OH to 85 miles north northeast of Mount Clemens MI. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU2).



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

24030.



...Grams

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