This alert expired on 8 June 2026 at 22:00 UTC. It is kept here as a record.
It is the 17th strongest of the 302 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 1 June 2026. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 8 at 3:14PM MDT until June 8 at 4:00PM MDT by NWS Denver CO
An estimated 2,670,912 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 14, 2026 · score 52 · 7.7 km
- August 15, 2026 · score 52 · 9.1 km
- July 28, 2026 · score 52 · 9.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 46 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 | Medium |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 80% |
| Coordinates | 39.7525, -104.9617 |
| Nearest City | Denver (2 km) |
| Population Exposed | 2.7M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-08T21:14:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.5e3a5e8346c6eee44db3a251ff005b1e0b75456d.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Adams, CO; Denver, CO; Jefferson, CO |
| Headline | Severe Thunderstorm Warning issued June 8 at 3:14PM MDT until June 8 at 4:00PM MDT by NWS Denver CO |
| Expires | 2026-06-08T16:00:00-06:00 |
| SenderName | NWS Denver CO |
| 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 Denver?
Calamity.live data shows a weather event with CalamityScore 46/100, near Denver (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.