Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 11 June 2026 at 01:15 UTC. It is kept here as a record.
It is the 6th strongest of the 7 detections recorded within 20 km of this point since 4 April 2026. The last comparable one was on 4 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 10 at 7:41PM CDT until June 10 at 8:15PM CDT by NWS Des Moines IA
Nearby, since 4 April 2026
- July 2, 2026 · score 46 · 3.9 km
- July 2, 2026 · score 46 · 12.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 43.2855, -91.9425 |
| Nearest City | La Crosse (80 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-11T00:41:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a94a45281202b1f11181cab074836d04 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Butler, IA; Floyd, IA; Howard, IA and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 10 at 7:41PM CDT until June 10 at 8:15PM CDT by NWS Des Moines IA |
| Expires | 2026-06-10T20:15:00-05:00 |
| SenderName | NWS Des Moines IA |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a94a45281202b1f11181cab074836d04767183ae.001.1","noaa_urn:oid:2.49.0.1.840.0.7a795390fd961c6e8035a8d45d27526dccf895cf.001.1","noaa_urn:oid:2.49.0.1.840.0.40bc48eb5aaccb051ff4bab84e1105c71d255552.001.1","noaa_urn:oid:2.49.0.1.840.0.649518968efa3d0fca3bee10cb451d89e332f89d.001.1"] |
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 in this area?