

637 

WWUS20 KWNS 102023

SEL9

SPC WW 102023

INZ000-MIZ000-OHZ000-LMZ000-110400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 429

NWS Storm Prediction Center Norman OK

425 PM EDT Mon Aug 10 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern and central Indiana

  Southwest Lower Michigan

  Far northwest Ohio

  Lake Michigan



* Effective this Monday afternoon from 425 PM until Midnight EDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 80

    mph likely

  A tornado or two possible



SUMMARY...A long-lived bowing MCS, that appears to have peaked in

terms of intensity and amplitude of significant severe wind gusts,

will likely produce scattered damaging winds and isolated

significant severe gusts as it spreads into Lower Michigan and

Indiana this evening.



The severe thunderstorm watch area is approximately along and 60

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

of Muskegon MI to 20 miles south southwest of Indianapolis IN. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU9).



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 426...WW 427...WW 428...



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

1 inch. Extreme turbulence and surface wind gusts to 70 knots. A few

cumulonimbi with maximum tops to 550. Mean storm motion vector

27050.



...Grams

