This alert expired on 25 June 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 82 recorded within 20 km of this point since 31 March 2026 — 8 others scored the same. The last comparable one was on 24 June 2026. 21 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 24 at 7:48PM CDT until June 24 at 8:15PM CDT by NWS Chicago IL
An estimated 2,831,395 people live within 50 km of this point.
Nearby, since 31 March 2026
- August 10, 2026 · score 52 · 10.0 km
- July 3, 2026 · score 46 · 10.5 km
- July 4, 2026 · score 52 · 11.5 km
How we know
Confirmed by 15 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 89 % 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 | 89% |
| Coordinates | 42.0732, -88.3644 |
| Nearest City | Elgin (8 km) |
| Population Exposed | 2.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-25T00:48:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8109f0985d171ecb7756fa695c436d5a |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grundy, IL; La Salle, IL; Cook, IL and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 24 at 7:48PM CDT until June 24 at 8:15PM CDT by NWS Chicago IL |
| Expires | 2026-06-24T20:15:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8109f0985d171ecb7756fa695c436d5ab9b78173.001.1","noaa_urn:oid:2.49.0.1.840.0.b25e8247fe82d2b5df6e0736819d6d09318ad5ac.001.1","noaa_urn:oid:2.49.0.1.840.0.eb115d2d94386a686eb64d5cca6d34247b8b7d79.001.1","noaa_urn:oid:2.49.0.1.840.0.f0dcec01c9e36f7a90e06852e87b00d0740753b8.001.1","noaa_urn:oid:2.49.0.1.840.0.0cbd2168abb0141f511e89c688d0461d00382b40.001.1","noaa_urn:oid:2.49.0.1.840.0.76a83aeb0e213667851eacda82a258a1c1dd0175.001.1"] |
| 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. |
| MergedSources | [{"id":"iem_E_42.000_-88.140_1782345000000","source":"iem","severity":"low","severityValue":25,"timestamp":1782345000000,"latitude":42,"longitude":-88.14},{"id":"iem_H_42.160_-88.300_1782341640000","source":"iem","severity":"low","severityValue":25,"timestamp":1782341640000,"latitude":42.16,"longitude":-88.3},{"id":"iem_H_42.150_-89.230_1782340920000","source":"iem","severity":"low","severityValue":25,"timestamp":1782340920000,"latitude":42.15,"longitude":-89.23},{"id":"iem_D_41.980_-88.140_1782344400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782344400000,"latitude":41.98,"longitude":-88.14},{"id":"iem_D_42.000_-88.190_1782344160000","source":"iem","severity":"low","severityValue":25,"timestamp":1782344160000,"latitude":42,"longitude":-88.19},{"id":"iem_D_42.000_-88.150_1782344280000","source":"iem","severity":"low","severityValue":25,"timestamp":1782344280000,"latitude":42,"longitude":-88.15},{"id":"iem_G_42.110_-88.280_1782342840000","source":"iem","severity":"low","severityValue":25,"timestamp":1782342840000,"latitude":42.11,"longitude":-88.28},{"id":"iem_H_42.160_-88.340_1782341820000","source":"iem","severity":"low","severityValue":25,"timestamp":1782341820000,"latitude":42.16,"longitude":-88.34},{"id":"iem_H_41.970_-88.850_1782343560000","source":"iem","severity":"low","severityValue":25,"timestamp":1782343560000,"latitude":41.97,"longitude":-88.85},{"id":"iem_D_42.100_-88.280_1782342780000","source":"iem","severity":"low","severityValue":25,"timestamp":1782342780000,"latitude":42.1,"longitude":-88.28},{"id":"iem_H_42.150_-88.270_1782341940000","source":"iem","severity":"low","severityValue":25,"timestamp":1782341940000,"latitude":42.15,"longitude":-88.27},{"id":"iem_E_42.040_-88.290_1782344880000","source":"iem","severity":"low","severityValue":25,"timestamp":1782344880000,"latitude":42.04,"longitude":-88.29},{"id":"iem_H_42.180_-88.390_1782340860000","source":"iem","severity":"low","severityValue":25,"timestamp":1782340860000,"latitude":42.18,"longitude":-88.39},{"id":"iem_G_41.980_-88.150_1782344340000","source":"iem","severity":"low","severityValue":25,"timestamp":1782344340000,"latitude":41.98,"longitude":-88.15}] |
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.
Want to know when something happens near Elgin?
Calamity.live data shows a weather event with CalamityScore 52/100, near Elgin (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.