Illinois Severe Thunderstorm Warning | Effective 05/04/2026 15:19

Headline: 
Severe Thunderstorm Warning issued May 4 at 5:19PM CDT until May 4 at 5:45PM CDT by NWS Chicago IL
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 4, 2026 - 3:19pm
Expires: 
May 4, 2026 - 3:45pm
Description: 
At 518 PM CDT, a severe thunderstorm was located over Lockport, moving east at 40 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Joliet, Orland Park, Tinley Park, Romeoville, Oak Forest, Lockport, New Lenox, Homer Glen, Mokena, Frankfort, Crest Hill, Palos Heights, Crestwood, Frankfort Square, Ingalls Park, Orland Hills, Fairmont, and Rockdale.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Cook, IL; Will, IL
Forcast Office: 
NWS Chicago IL
Sender: 
w-nws.webmaster@noaa.gov