Illinois Severe Severe Thunderstorm Warning | Effective 07/27/2026 09:13

Headline: 
Severe Thunderstorm Warning issued July 27 at 11:13AM CDT until July 27 at 12:15PM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
July 27, 2026 - 9:13am
Expires: 
July 27, 2026 - 10:15am
Description: 
At 1113 AM CDT, a cluster of severe thunderstorms was located over Wauconda, Crystal Lake, and Carpentersville, moving east at 20 to 30 mph. HAZARD...60 mph wind gusts and quarter size hail. The largest hail is expected to fall over northwestern Cook County. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Chicago, Elgin, Waukegan, Arlington Heights, Evanston, Schaumburg, Palatine, Skokie, Des Plaines, Mount Prospect, Hoffman Estates, Glenview, Buffalo Grove, Bartlett, Crystal Lake, Streamwood, Hanover Park, Carpentersville, Wheeling, Park Ridge, Northbrook, Elk Grove Village, North Chicago, Gurnee, and Mundelein.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Cook, IL; Kane, IL; Lake, IL; McHenry, IL
Forcast Office: 
NWS Chicago IL