This alert expired on 13 August 2026 at 01:15 UTC. It is kept here as a record.
No stronger detection stands among the 34 recorded within 20 km of this point since 9 June 2026 — 17 others scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 12 at 6:50PM MDT until August 12 at 7:15PM MDT by NWS Denver CO
How we know
Confirmed by 8 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 68 % 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 | 68% |
| Coordinates | 40.5683, -102.7333 |
| Nearest City | Evans (167 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-13T00:50:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.48f8037888bcd8f720c52b09963d22adae218996.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Logan, CO; Phillips, CO |
| Headline | Severe Thunderstorm Warning issued August 12 at 6:50PM MDT until August 12 at 7:15PM MDT by NWS Denver CO |
| Expires | 2026-08-12T19:15:00-06:00 |
| SenderName | NWS Denver CO |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 61 |
| Iem Unit | MPH |
| Iem City | 1 ESE Akron |
| Iem County | Washington |
| Iem State | CO |
| Iem Wfo | BOU |
| MergedSources | [{"id":"iem_G_40.780_-103.220_1786578780000","source":"iem","severity":"low","severityValue":25,"timestamp":1786578780000,"latitude":40.78,"longitude":-103.22},{"id":"iem_G_40.800_-103.240_1786578840000","source":"iem","severity":"low","severityValue":25,"timestamp":1786578840000,"latitude":40.8,"longitude":-103.24},{"id":"iem_T_40.850_-103.210_1786578120000","source":"iem","severity":"low","severityValue":25,"timestamp":1786578120000,"latitude":40.85,"longitude":-103.21},{"id":"iem_G_40.880_-102.960_1786580160000","source":"iem","severity":"low","severityValue":25,"timestamp":1786580160000,"latitude":40.88,"longitude":-102.96},{"id":"iem_G_40.160_-103.200_1786577580000","source":"iem","severity":"low","severityValue":25,"timestamp":1786577580000,"latitude":40.16,"longitude":-103.2},{"id":"iem_G_40.160_-103.230_1786578000000","source":"iem","severity":"low","severityValue":25,"timestamp":1786578000000,"latitude":40.16,"longitude":-103.23},{"id":"iem_G_40.160_-103.200_1786579920000","source":"iem","severity":"low","severityValue":25,"timestamp":1786579920000,"latitude":40.16,"longitude":-103.2}] |
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.
Want to know when something happens in this area?
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.