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196 

WWUS20 KWNS 122336

SEL1

SPC WW 122336

ILZ000-WIZ000-LMZ000-130700-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 651

NWS Storm Prediction Center Norman OK

635 PM CDT Thu Sep 12 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  northern Illinois

  southern Wisconsin

  Lake Michigan



* Effective this Thursday night and Friday morning from 635 PM

  until 200 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Scattered large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms ongoing near and west of the Mississippi

River are expected to increase in coverage, while spreading eastward

across southern Wisconsin and northern Illinois over the next

several hours.  Damaging winds will be the primary severe threat

accompanying the stronger storms, though hail will also be possible

locally.  In addition, a tornado or two may also occur --

particularly within a few counties either side of the

Wisconsin/Illinois border area.



The severe thunderstorm watch area is approximately along and 65

statute miles east and west of a line from 35 miles north northeast

of Madison WI to 60 miles southwest of Marseilles IL. 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 648...WW 649...WW 650...



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

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

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

23030.



...Goss

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