

761 

WWUS20 KWNS 072052

SEL1

SPC WW 072052

ILZ000-MIZ000-WIZ000-LMZ000-080200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 81

NWS Storm Prediction Center Norman OK

355 PM CDT Tue Apr 7 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeast Illinois

  Western Lower Michigan

  Southeast Wisconsin

  Lake Michigan



* Effective this Tuesday afternoon and evening from 355 PM until

  900 PM CDT.



* Primary threats include...

  Scattered damaging winds likely with isolated significant gusts

    to 75 mph possible

  Scattered large hail likely with isolated very large hail events

    to 2.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms are expected to rapidly develop this

afternoon along an approaching cold front and move across the watch

area.  Large hail and damaging wind gusts will be possible in the

stronger cells.  An isolated tornado or two is also possible.



The severe thunderstorm watch area is approximately along and 75

statute miles east and west of a line from 45 miles north northwest

of Traverse City MI to 65 miles southeast of Racine WI. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



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

2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A

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

28035.



...Hart

