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492 

WWUS20 KWNS 011921

SEL5

SPC WW 011921

ILZ000-INZ000-WIZ000-LMZ000-020200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 305

NWS Storm Prediction Center Norman OK

225 PM CDT Sat Jun 1 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northern Illinois

  Northwest Indiana

  Southern Wisconsin

  Lake Michigan



* Effective this Saturday afternoon and evening from 225 PM until

  900 PM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Thunderstorms have begun to develop over south-central

Wisconsin.  This activity will build eastward across the watch area

this afternoon, with large hail and damaging winds possible in the

stronger cells.



The severe thunderstorm watch area is approximately along and 60

statute miles north and south of a line from 30 miles west northwest

of Rockford IL to 45 miles north of Valparaiso IN. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU5).



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 302...WW 303...WW 304...



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

27030.



...Hart

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