Reported by SPC 174 days ago.
It is the 12th strongest of the 202 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
SPC reported: Hail 275 in near 1 S Westmont, DuPage, IL. Public report of baseball size hail in south Westmont. (LOT)
An estimated 8,480,992 people live within 50 km of this point.
Nearby, since 10 March 2026
- July 27, 2026 · score 76 · 2.0 km
- March 10, 2026 · score 58 · 4.3 km
- March 11, 2026 · score 58 · 4.4 km
How we know
Confirmed by 2 independent sources, including SPC.
Our own score for this event is 58 out of 100, at 87 % 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 | 87% |
| Coordinates | 41.7700, -87.9700 |
| Nearest City | Darien (2 km) |
| Population Exposed | 8.5M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-10T22:53:00.000Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 275 |
| Location | 1 S Westmont |
| County | DuPage |
| State | IL |
| Comments | Public report of baseball size hail in south Westmont. (LOT) |
| Iem TypeSummary | H |
| Iem Magnitude | 2.75 |
| Iem Unit | Inch |
| Iem City | 1 S Westmont |
| Iem County | DuPage |
| Iem State | IL |
| Iem Wfo | LOT |
| Iem Remark | Public report of baseball size hail in south Westmont. |
| MergedSources | [{"id":"iem_H_41.770_-87.970_1773183180000","source":"iem","severity":"low","severityValue":25,"timestamp":1773183180000,"latitude":41.77,"longitude":-87.97}] |
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 188 scientific monitoring sources.