This alert expired on 25 June 2026 at 01:30 UTC. It is kept here as a record.
It is the 10th strongest of the 121 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 24 at 7:54PM CDT until June 24 at 8:30PM CDT by NWS Chicago IL
An estimated 8,223,961 people live within 50 km of this point.
Nearby, since 10 March 2026
- March 13, 2026 · score 52 · 4.6 km
- July 3, 2026 · score 52 · 5.7 km
- August 9, 2026 · score 52 · 5.8 km
How we know
Confirmed by 20 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 88 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 88% |
| Coordinates | 41.9995, -87.8542 |
| Nearest City | Park Ridge (2 km) |
| Population Exposed | 8.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-25T00:54:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.42d8c4cdf34e272d351852bf9c17be0d |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Cook, IL; Lake, IN; Grundy, IL and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 24 at 7:54PM CDT until June 24 at 8:30PM CDT by NWS Chicago IL |
| Expires | 2026-06-24T20:30:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.42d8c4cdf34e272d351852bf9c17be0dd339304f.001.1","noaa_urn:oid:2.49.0.1.840.0.aa2bff998623860715fbbd402081d008c7f4a8cb.001.1","noaa_urn:oid:2.49.0.1.840.0.8109f0985d171ecb7756fa695c436d5ab9b78173.001.1","noaa_urn:oid:2.49.0.1.840.0.0cbd2168abb0141f511e89c688d0461d00382b40.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 58 |
| Iem Unit | MPH |
| Iem City | 1 S Hanover Park |
| Iem County | DuPage |
| Iem State | IL |
| Iem Wfo | LOT |
| Iem Remark | Private weather station KILHANOVI2 measured a wind gust to 58 mph. |
| Google News RssFeed | weather |
| Google News SourceName | ABC7 Chicago |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 10 February 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a weather event with CalamityScore 52/100, near Park Ridge (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.