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WWUS20 KWNS 290004

SEL8

SPC WW 290004

ILZ000-LMZ000-290500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 378

NWS Storm Prediction Center Norman OK

705 PM CDT Wed Jun 28 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Northern Illinois

  Lake Michigan



* Effective this Wednesday night from 705 PM until Midnight CDT.



* Primary threats include...

  A couple tornadoes possible

  Scattered damaging wind gusts to 70 mph likely

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...Severe storms over southern Wisconsin and far northwest

Illinois  nd northeast Iowa are expected to continue moving eastward

toward southern Lake Michigan later this evening with potential to

produce damaging wind gusts and possibly a couple of tornadoes.



The tornado watch area is approximately along and 50 statute miles

east and west of a line from 30 miles northeast of Rockford IL to 50

miles south southeast of Rockford IL. For a complete depiction of

the watch see the associated watch outline update (WOUS64 KWNS

WOU8).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Tornado Watch means conditions are favorable for

tornadoes and 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 375...WW 376...WW 377...



AVIATION...Tornadoes and 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 500. Mean

storm motion vector 27035.



...Weiss

