Reported by IEM 171 days ago.
It is the 7th strongest of the 119 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
IEM reported: Photos show large piece of roofing material blown off of Charles H Walsh Academy. Relayed by broadcast media, time based on time of report.
An estimated 8,036,713 people live within 50 km of this point.
Nearby, since 10 March 2026
- August 9, 2026 · score 52 · 2.5 km
- August 9, 2026 · score 52 · 3.9 km
- June 25, 2026 · score 52 · 4.6 km
How we know
Confirmed by 2 independent sources, including IEM.
Our own score for this event is 52 out of 100, at 64 % 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 | 64% |
| Coordinates | 42.0100, -87.8000 |
| Nearest City | Niles (1 km) |
| Population Exposed | 8.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-13T17:30:00.000Z |
| Source | https://mesonet.agron.iastate.edu/lsr/ |
Score Breakdown
Technical Details
| TypeSummary | O |
| City | 1 SSE Niles |
| County | Cook |
| State | IL |
| Wfo | LOT |
| Remark | Photos show large piece of roofing material blown off of Charles H Walsh Academy. Relayed by broadcast media, time based on time of report. |
| Google News RssFeed | weather |
| Google News SourceName | NBC 5 Chicago |
| MergedSources | [{"id":"gnews_weather_492623_158","source":"google_news","severity":"medium","severityValue":40,"timestamp":1773443120000,"latitude":41.85,"longitude":-87.65}] |
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 52/100, near Niles (United States), based on data from iem. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.