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138 

WWUS20 KWNS 112051

SEL9

SPC WW 112051

OHZ000-PAZ000-LEZ000-120100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 429

NWS Storm Prediction Center Norman OK

455 PM EDT Wed Aug 11 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Eastern Ohio

  Extreme northwestern Pennsylvania

  Lake Erie



* Effective this Wednesday afternoon and evening from 455 PM

  until 900 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1 inch in diameter possible



SUMMARY...A line of storms with a history of wind damage will likely

persist into eastern Ohio and northwestern Pennsylvania before

weakening by late evening.  Damaging winds of 60-70 mph and

isolated, marginally severe hail around 1 inch diameter will be the

main threats.



The severe thunderstorm watch area is approximately along and 40

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

of Erie PA to 25 miles east southeast of Zanesville OH. 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 424...WW 425...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 60 knots. A few

cumulonimbi with maximum tops to 550. Mean storm motion vector

27035.



...Thompson

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