Reported by SPC 168 days ago.
It is the 2nd strongest of the 252 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 182 more were recorded here in the fortnight before it.
What the source measured
SPC reported: Hail 100 in near Wood River, Madison, IL. Corrects time entry of previous hail report from Wood River. Quarter-size hail in Wood River... reported by Madison County SKYWARN. (LSX)
An estimated 1,181,627 people live within 50 km of this point.
Nearby, since 15 March 2026
- March 15, 2026 · score 58 · 0.0 km
- May 23, 2026 · score 52 · 6.9 km
- May 24, 2026 · score 48 · 7.3 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 60 % 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 | 60% |
| Coordinates | 38.8600, -90.0900 |
| Nearest City | Upper Alton (8 km) |
| Population Exposed | 1.2M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-03-16T12:10:32.598Z |
| Source | https://www.spc.noaa.gov/climo/reports/today.html |
Score Breakdown
Technical Details
| ReportType | hail |
| Speed | 100 |
| Location | Wood River |
| County | Madison |
| State | IL |
| Comments | Corrects time entry of previous hail report from Wood River. Quarter-size hail in Wood River... reported by Madison County SKYWARN. (LSX) |
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 Upper Alton (United States), based on data from spc. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.