This alert expired on 29 June 2026 at 17:01 UTC. It is kept here as a record.
It is the strongest of the 113 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 25 June 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Test
An estimated 597,253 people live within 50 km of this point.
Nearby, since 15 March 2026
- July 2, 2026 · score 48 · 11.7 km
- June 25, 2026 · score 48 · 15.4 km
- June 25, 2026 · score 52 · 16.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 54 out of 100, at 80 % 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 | High |
| Calamity Score (ours) | 54 / 100 |
| Our confidence | 80% |
| Coordinates | 40.3894, -104.9316 |
| Nearest City | Windsor (10 km) |
| Population Exposed | 597.3K within 50 km |
| Impact Tier | severe |
| Date | 2026-06-29 — time not reported by the source |
| Source | https://api.weather.gov/alerts/2593818260138534 |
Score Breakdown
Technical Details
| Event | Practice/Demo Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Larimer County |
| Headline | Test |
| Expires | 2026-06-29T10:01:25-07:00 |
| SenderName | 201485,LETA - 911 Alert,LETA |
| 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 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 near Windsor?
Calamity.live data shows a weather event with CalamityScore 54/100, near Windsor (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.