Illinois Severe Severe Thunderstorm Warning | Effective 06/17/2026 18:43

Headline: 
Severe Thunderstorm Warning issued June 17 at 8:43PM CDT until June 17 at 9:30PM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 17, 2026 - 6:43pm
Expires: 
June 17, 2026 - 7:30pm
Description: 
At 843 PM CDT, severe thunderstorms were located along a line extending from Lake Geneva to near Harvard to near Roscoe, moving east at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... McHenry, Woodstock, Fox Lake, Harvard, Poplar Grove, Johnsburg, Lakemoor, Twin Lakes, Spring Grove, Wonder Lake, Pistakee Highlands, Genoa City, Richmond, Sharon, Capron, Hebron, Bull Valley, McCullom Lake, Ringwood, Chemung, and Greenwood.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Boone, IL; McHenry, IL
Forcast Office: 
NWS Chicago IL