This alert expired on 13 August 2026 at 15:30 UTC. It is kept here as a record.
It is the strongest of the 34 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 13 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 13 at 10:20AM CDT until August 13 at 10:30AM CDT by NWS Quad Cities IA IL
An estimated 25,410 people live within 50 km of this point.
Nearby, since 10 March 2026
- March 10, 2026 · score 23 · 13.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 41.0836, -91.5209 |
| Nearest City | Burlington (46 km) |
| Population Exposed | 25.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-13T15:20:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Henry, IA; Louisa, IA; Washington, IA |
| Headline | Severe Thunderstorm Warning issued August 13 at 10:20AM CDT until August 13 at 10:30AM CDT by NWS Quad Cities IA IL |
| Expires | 2026-08-13T10:30:00-05:00 |
| 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 34/100, near Burlington (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.