This alert expired on 11 June 2026 at 14:30 UTC. It is kept here as a record.
It is the strongest of the 40 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 11 at 8:50AM CDT until June 11 at 9:30AM CDT by NWS Quad Cities IA IL
An estimated 20,608 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 7, 2026 · score 22 · 9.8 km
- August 8, 2026 · score 43 · 18.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 58 out of 100, at 81 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 58 / 100 |
| Our confidence | 81% |
| Coordinates | 41.5500, -92.1529 |
| Nearest City | Coralville (50 km) |
| Population Exposed | 20.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T13:50:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Iowa, IA; Keokuk, IA |
| Headline | Tornado Warning issued June 11 at 8:50AM CDT until June 11 at 9:30AM CDT by NWS Quad Cities IA IL |
| Expires | 2026-06-11T09:30:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 Coralville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.