Right now
The most recent data we hold from NOAA arrived 10 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 1 June 2026 at 21:45 UTC. It is kept here as a record.
It is the 4th strongest of the 217 detections recorded within 20 km of this point since 14 March 2026. The last comparable one was on 26 May 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 3:07PM MDT until June 1 at 3:45PM MDT by NWS Denver CO
An estimated 65,132 people live within 50 km of this point.
Nearby, since 14 March 2026
- August 12, 2026 · score 39 · 8.3 km
- July 9, 2026 · score 39 · 9.2 km
- August 30, 2026 · score 39 · 14.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 80% |
| Coordinates | 41.0962, -104.6491 |
| Nearest City | Cheyenne (15 km) |
| Population Exposed | 65.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T21:07:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.8ba9ef3c84195058b62d24927c6b46b9 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Larimer, CO; Weld, CO; Goshen, WY; Goshen, WY; Laramie, WY; Platte, WY and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 3:07PM MDT until June 1 at 3:45PM MDT by NWS Denver CO |
| Expires | 2026-06-01T15:45:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8ba9ef3c84195058b62d24927c6b46b962daa6de.001.1","noaa_urn:oid:2.49.0.1.840.0.0b7944ad058f12714f91172f1e74cc28ab0eb00a.001.1","noaa_urn:oid:2.49.0.1.840.0.9a3c9f593e31e945a6429877c430a529f4b8051f.001.1","noaa_urn:oid:2.49.0.1.840.0.f9204ef502a8e425221b46127ac5d32031989c40.001.1"] |
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.
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