

400 

WWUS20 KWNS 272258

SEL4

SPC WW 272258

MIZ000-WIZ000-LMZ000-LSZ000-280600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 354

NWS Storm Prediction Center Norman OK

600 PM CDT Mon Aug 27 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Much of Upper Michigan

  Northeastern Wisconsin

  Lake Michigan

  Lake Superior



* Effective this Monday night and Tuesday morning from 600 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered damaging winds likely with isolated significant gusts

    to 75 mph possible

  Scattered large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...A convective cluster will likely continue eastward along

the shore of Lake Superior through the late evening hours, with an

attendant threat for damaging winds.  Farther southwest, a larger

thunderstorm line/cluster now crossing the Mississippi River will

continue across Wisconsin and Upper Michigan into the overnight

hours.  Damaging winds will be the main threat, though an isolated

tornado or two cannot be ruled out with circulations embedded within

the larger clusters/lines.



The severe thunderstorm watch area is approximately along and 105

statute miles north and south of a line from 35 miles west southwest

of Rhinelander WI to 45 miles northeast of Escanaba MI. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU4).



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 353...



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

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

few cumulonimbi with maximum tops to 550. Mean storm motion vector

24040.



...Thompson

