Severe Severe Storm ● Closed

Severe Thunderstorm Warning — Cook, IL; DuPage, IL; Kankakee, IL; Will, IL

Event time: Last updated: Aug 21, 2026 United States
Icon = what happened · ring colour = how serious: Extreme Severe Moderate Minor

Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.

Severe Thunderstorm Warning issued August 12 at 9:50AM CDT until August 12 at 10:45AM CDT by NWS Chicago IL

Measurements

Coordinates41.6575, -87.8338
RegionCook, IL; DuPage, IL; Kankakee, IL; Will, IL
Expires2026-08-12T10:45:00-05:00
Nws UrgencyImmediate
Nws CertaintyObserved

Official source

Weather alert data courtesy of NOAA / National Weather Service

This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.

Severity as published by US National Weather Service.

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Also reported by: NWS NWS NWS

This event as JSON · API and licence

Source updated 68 days ago (Aug 12, 2026 14:52 UTC) · we last heard from US National Weather Service 11 seconds ago

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