Right now
The most recent data we hold from NOAA arrived 1 minute 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 20:21 UTC. It is kept here as a record.
It is the 2nd strongest of the 136 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 1 at 2:11PM MDT until June 1 at 2:15PM MDT by NWS Denver CO
An estimated 1,825,684 people live within 50 km of this point.
Nearby, since 15 March 2026
- August 16, 2026 · score 52 · 7.8 km
- June 3, 2026 · score 46 · 12.4 km
- June 1, 2026 · score 52 · 13.8 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 | 39.4588, -104.6538 |
| Nearest City | Parker (11 km) |
| Population Exposed | 1.8M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-01T20:11:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.c3454122a06253df8a51cd060db7e378 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Western Arapahoe, CO; Denver, CO; Douglas, CO; Douglas, CO; Elbert, CO; Western Arapahoe, CO; Central Arapahoe, CO and 2 more areas |
| Headline | Severe Thunderstorm Warning issued June 1 at 2:11PM MDT until June 1 at 2:15PM MDT by NWS Denver CO |
| Expires | 2026-06-01T14:21:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c3454122a06253df8a51cd060db7e378d3f494db.001.1","noaa_urn:oid:2.49.0.1.840.0.c78d099550fff86eb2f37bcb1de12bc5844273e9.001.1","noaa_urn:oid:2.49.0.1.840.0.fff202534efd206162979996a7a8b6d516462736.001.1","noaa_urn:oid:2.49.0.1.840.0.ffb9484f356dcfabb5f5482566cfe4fa75c7237c.001.1","noaa_urn:oid:2.49.0.1.840.0.9b49bc2bd495bf573aa6d5377c7c8d07203d0782.001.1"] |
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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