Reported by SPC 173 days ago.
It is the 15th strongest of the 228 detections recorded within 20 km of this point since 10 March 2026. The last comparable one was on 10 March 2026. 14 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 100 in near 1 S Darien, DuPage, IL. Trained spotter reports quarter size hail at I-55 and Cass Avenue in Darien. Time estimated by radar. (LOT)
An estimated 8,412,237 people live within 50 km of this point.
Nearby, since 10 March 2026
- July 27, 2026 · score 76 · 3.6 km
- March 10, 2026 · score 58 · 4.4 km
- July 4, 2026 · score 52 · 5.0 km
How we know
One source: SPC. Not yet confirmed by a second, independent source.
Our own score for this event is 58 out of 100, at 68 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | high |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 68% |
| Coordinates | 41.7300, -87.9700 |
| Nearest City | Darien (2 km) |
| Population Exposed | 8.4M within 50 km |
| Impact Tier | severe |
| Date | 2026-03-11 — time not reported by the source |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 100 |
| Location | 1 S Darien |
| County | DuPage |
| State | IL |
| Comments | Trained spotter reports quarter size hail at I-55 and Cass Avenue in Darien. Time estimated by radar. (LOT) |
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 58/100, near Darien (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.