This alert expired on 13 June 2026 at 18:45 UTC. It is kept here as a record.
It is the 2nd strongest of the 38 detections recorded within 20 km of this point since 11 March 2026. The last comparable one was on 11 June 2026. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 13 at 12:59PM CDT until June 13 at 1:45PM CDT by NWS Quad Cities IA IL
An estimated 110,759 people live within 50 km of this point.
Nearby, since 11 March 2026
- March 11, 2026 · score 49 · 11.0 km
- August 8, 2026 · score 43 · 13.8 km
- July 8, 2026 · score 43 · 19.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 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 | medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 41.5400, -91.8040 |
| Nearest City | Coralville (24 km) |
| Population Exposed | 110.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-13T17:59:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Iowa, IA; Johnson, IA; Keokuk, IA; Washington, IA |
| Headline | Severe Thunderstorm Warning issued June 13 at 12:59PM CDT until June 13 at 1:45PM CDT by NWS Quad Cities IA IL |
| Expires | 2026-06-13T13:45:00-05:00 |
| SenderName | NWS Quad Cities IA IL |
| HasExactCoords | true |
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 43/100, near Coralville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.