

277 

WWUS20 KWNS 070134

SEL8

SPC WW 070134

MIZ000-LHZ000-LMZ000-070700-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 488

NWS Storm Prediction Center Norman OK

940 PM EDT Sun Sep 6 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central Lower Michigan

  Lake Huron

  Lake Michigan



* Effective this Sunday night and Monday morning from 940 PM

  until 300 AM EDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Scattered thunderstorms are increasing in coverage and

intensity over portions of Lake Michigan and Lower Michigan. This

activity may become occasionally severe, with the potential for

large hail and locally gusty/damaging winds.



The severe thunderstorm watch area is approximately along and 55

statute miles north and south of a line from 40 miles northwest of

Muskegon MI to 25 miles north northeast of Bad Axe MI. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU8).



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

2 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

26035.



...Hart

