Reported by IEM 172 days ago.
No stronger detection stands among the 19 recorded within 20 km of this point since 13 March 2026 — 3 others scored the same.
What the source measured
IEM reported: A tree with shallow roots was blown over in Zion, IL.
An estimated 1,262,566 people live within 50 km of this point.
Nearby, since 13 March 2026
- July 27, 2026 · score 48 · 11.2 km
- August 9, 2026 · score 52 · 18.9 km
How we know
Confirmed by 2 independent sources, including IEM.
Our own score for this event is 52 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 65% |
| Coordinates | 42.4900, -87.8600 |
| Nearest City | Zion (5 km) |
| Population Exposed | 1.3M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-13T15:30:00.000Z |
| Source | https://mesonet.agron.iastate.edu/lsr/ |
Score Breakdown
Technical Details
| TypeSummary | O |
| City | 2 WNW Winthrop Harbor |
| County | Lake |
| State | IL |
| Wfo | LOT |
| Remark | A tree with shallow roots was blown over in Zion, IL. |
| Google News RssFeed | weather |
| Google News SourceName | Milwaukee Journal Sentinel |
| MergedSources | [{"id":"gnews_weather_492618_169","source":"google_news","severity":"medium","severityValue":40,"timestamp":1773428100000,"latitude":43.04,"longitude":-87.91}] |
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 8 March 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 Zion?
Calamity.live data shows a weather event with CalamityScore 52/100, near Zion (United States), based on data from iem. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.