This alert expired on 3 June 2026 at 23:00 UTC. It is kept here as a record.
It is the 11th strongest of the 25 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 3 at 4:14PM MDT until June 3 at 5:00PM MDT by NWS Denver CO
An estimated 1,843,835 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 27, 2026 · score 52 · 7.7 km
- July 22, 2026 · score 52 · 18.4 km
- June 1, 2026 · score 52 · 19.4 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 81 % 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 | 81% |
| Coordinates | 40.0210, -104.5750 |
| Nearest City | Brighton (21 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-03T22:14:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.b4af2397023a0aaf5a1c3090c6d778e2 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Weld, CO; Douglas, CO |
| Headline | Severe Thunderstorm Warning issued June 3 at 4:14PM MDT until June 3 at 5:00PM MDT by NWS Denver CO |
| Expires | 2026-06-03T17:00:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b4af2397023a0aaf5a1c3090c6d778e22738bfd0.001.1","noaa_urn:oid:2.49.0.1.840.0.f8387a5fdba9c4a4890532e262aac8189df0d56b.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 near Brighton?
Calamity.live data shows a weather event with CalamityScore 46/100, near Brighton (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.