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WWUS20 KWNS 111828

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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 426

NWS Storm Prediction Center Norman OK

230 PM EDT Wed Aug 11 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southeast Lower Michigan

  Much of northwest and north central Ohio

  Lake Erie

  Lake Huron



* Effective this Wednesday afternoon and evening from 230 PM

  until 800 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph likely

  Isolated large hail events to 1 inch in diameter possible

  A tornado or two possible



SUMMARY...A line of storms will continue to move eastward from

Indiana into Ohio, with some northward expansion of storms across

southeast Lower Michigan through the afternoon.  Damaging winds will

be the main threat, though marginally severe hail could occur with

the strongest updrafts, and a brief tornado or two may also occur

with embedded circulations in line segments.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 5 miles north northwest

of Bad Axe MI to 25 miles west of Columbus OH. 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 423...WW 424...WW 425...



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

1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 550. Mean storm motion vector

27040.



...Thompson

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