Right now
The most recent data we hold from NOAA arrived 2 hours 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 6th strongest of the 61 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 2:52PM MDT until June 1 at 3:45PM MDT by NWS Denver CO
An estimated 2,204,772 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 1, 2026 · score 76 · 5.4 km
- July 30, 2026 · score 52 · 8.5 km
- July 29, 2026 · score 52 · 8.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Our confidence | 80% |
| Coordinates | 39.7742, -104.5183 |
| Nearest City | Aurora (27 km) |
| Population Exposed | 2.2M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T20:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.f9204ef502a8e425221b46127ac5d320 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Adams, CO; Central Arapahoe, CO; Adams, CO |
| Headline | Severe Thunderstorm Warning issued June 1 at 2:52PM 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 | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f9204ef502a8e425221b46127ac5d32031989c40.001.1","noaa_urn:oid:2.49.0.1.840.0.c648c5149a7032efc4e63b40a713ee6b530a48c3.002.1"] |
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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