Illinois Severe Thunderstorm Warning | Effective 04/17/2026 18:18

Headline: 
Severe Thunderstorm Warning issued April 17 at 8:18PM CDT until April 17 at 9:30PM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 17, 2026 - 6:18pm
Expires: 
April 17, 2026 - 7:30pm
Description: 
SVRLOT The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Lake County in northeastern Illinois... Northwestern Cook County in northeastern Illinois... * Until 930 PM CDT. * At 818 PM CDT, severe thunderstorms were located along a line extending from Paddock Lake to Crystal Lake to near Genoa, moving east at 25 mph. HAZARD...70 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect considerable tree damage. Damage is likely to mobile homes, roofs, and outbuildings. * Locations impacted include... Elgin, Waukegan, Arlington Heights, Evanston, Schaumburg, Palatine, Skokie, Des Plaines, Mount Prospect, Hoffman Estates, Glenview, Buffalo Grove, Bartlett, Streamwood, Hanover Park, Wheeling, Park Ridge, Northbrook, Elk Grove Village, North Chicago, Gurnee, Mundelein, Niles, Highland Park, and Round Lake Beach.
Instruction: 
Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 1000 PM CDT for northeastern Illinois. A Tornado Watch also remains in effect until 1100 PM CDT for northeastern Illinois.
Area Description: 
Cook, IL; Lake, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov