Right now
The most recent data we hold from NOAA arrived 89 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 8 June 2026 at 22:33 UTC. It is kept here as a record.
It is the 21st strongest of the 32 detections recorded within 20 km of this point since 21 May 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 8 at 4:23PM MDT until June 8 at 4:30PM MDT by NWS Denver CO
Nearby, since 21 May 2026
- July 28, 2026 · score 22 · 13.5 km
- June 24, 2026 · score 22 · 14.4 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 16 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 39.6883, -103.8850 |
| Nearest City | Parker (77 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-08T22:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.62bf7daa6d67c489e484be7ae9c90191 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-06-08T22:23:00.000Z.
First archived: 2026-06-08T22:25:37.550Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Adams, CO; Denver, CO; Central Arapahoe, CO; Elbert, CO; Lincoln, CO and 5 more areas |
| Headline | Severe Thunderstorm Warning issued June 8 at 4:23PM MDT until June 8 at 4:30PM MDT by NWS Denver CO |
| Expires | 2026-06-08T16:33:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.62bf7daa6d67c489e484be7ae9c9019109ac9f2a.001.1","noaa_urn:oid:2.49.0.1.840.0.85d3028ea19802d37b7ed3a2bfdcd990eeadbb99.002.1","noaa_urn:oid:2.49.0.1.840.0.c564a8b6058064b3e5aa352a5f8f088c510e163a.001.1","noaa_urn:oid:2.49.0.1.840.0.06a339f0eaace05c3a3ce31b61dd49b12c6d7238.001.1","noaa_urn:oid:2.49.0.1.840.0.1282a5a59c86185cf5d1c9b2677ba4973ec35c6e.001.1","noaa_urn:oid:2.49.0.1.840.0.f4e95dee54d6be90a7007b29d619a69187289285.001.1","noaa_urn:oid:2.49.0.1.840.0.086a28d7dd69c397b39ed179e019a79860aa6f74.001.1","noaa_urn:oid:2.49.0.1.840.0.fd1c0de95ae97e7cec6820b1c83aecea608eb1e7.001.1","noaa_urn:oid:2.49.0.1.840.0.965d24d877a677d6094e9c4173f94bca43277a6d.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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