This alert expired on 24 June 2026 at 08:00 UTC. It is kept here as a record.
It is the 4th strongest of the 23 detections recorded within 20 km of this point since 6 May 2026. The last comparable one was on 9 June 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 24 at 1:21AM MDT until June 24 at 2:00AM MDT by NWS Denver CO
Nearby, since 6 May 2026
- May 9, 2026 · score 22 · 8.5 km
- June 25, 2026 · score 46 · 8.8 km
- June 3, 2026 · score 16 · 16.3 km
How we know
Confirmed by 15 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 70 % 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) | 22 / 100 |
| Our confidence | 70% |
| Coordinates | 40.6820, -103.9320 |
| Nearest City | Greeley (72 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-24T07:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a1e0ed5f0563bae814eceac0cac246ea5be95dc3.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Logan, CO; Morgan, CO; Weld, CO |
| Headline | Severe Thunderstorm Warning issued June 24 at 1:21AM MDT until June 24 at 2:00AM MDT by NWS Denver CO |
| Expires | 2026-06-24T02:00:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 2 |
| Iem Unit | Inch |
| Iem City | Wiggins |
| Iem County | Morgan |
| Iem State | CO |
| Iem Wfo | BOU |
| Iem Remark | Time estimated from radar. |
| MergedSources | [{"id":"iem_H_40.230_-104.070_1782269760000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269760000,"latitude":40.23,"longitude":-104.07},{"id":"iem_H_40.230_-104.040_1782272040000","source":"iem","severity":"low","severityValue":25,"timestamp":1782272040000,"latitude":40.23,"longitude":-104.04},{"id":"iem_H_40.230_-104.040_1782273420000","source":"iem","severity":"low","severityValue":25,"timestamp":1782273420000,"latitude":40.23,"longitude":-104.04},{"id":"iem_H_40.380_-104.090_1782268560000","source":"iem","severity":"low","severityValue":25,"timestamp":1782268560000,"latitude":40.38,"longitude":-104.09},{"id":"iem_H_40.230_-104.070_1782269820000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269820000,"latitude":40.23,"longitude":-104.07},{"id":"iem_G_40.250_-104.080_1782275100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782275100000,"latitude":40.25,"longitude":-104.08},{"id":"iem_H_40.210_-104.080_1782269580000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269580000,"latitude":40.21,"longitude":-104.08},{"id":"iem_H_40.290_-104.070_1782269700000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269700000,"latitude":40.29,"longitude":-104.07},{"id":"iem_H_40.320_-103.920_1782270540000","source":"iem","severity":"low","severityValue":25,"timestamp":1782270540000,"latitude":40.32,"longitude":-103.92},{"id":"iem_H_40.220_-104.080_1782269760000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269760000,"latitude":40.22,"longitude":-104.08},{"id":"iem_H_40.210_-104.080_1782271500000","source":"iem","severity":"low","severityValue":25,"timestamp":1782271500000,"latitude":40.21,"longitude":-104.08},{"id":"iem_H_40.380_-104.090_1782269040000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269040000,"latitude":40.38,"longitude":-104.09},{"id":"iem_H_40.240_-104.080_1782269400000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269400000,"latitude":40.24,"longitude":-104.08},{"id":"iem_H_40.230_-104.070_1782269580000","source":"iem","severity":"low","severityValue":25,"timestamp":1782269580000,"latitude":40.23,"longitude":-104.07}] |
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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Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.