Right now
The most recent data we hold from NOAA arrived 41 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 17 May 2026 at 20:30 UTC. It is kept here as a record.
No stronger detection stands among the 11 recorded within 20 km of this point since 11 April 2026 — 2 others scored the same. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 17 at 2:17PM MDT until May 17 at 2:30PM MDT by NWS Grand Junction CO
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 22 out of 100, at 65 % 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 | 65% |
| Coordinates | 40.0640, -108.7540 |
| Nearest City | Clifton (111 km) |
| Impact Tier | minor |
| Timestamp | 2026-05-17T20:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.dd9ec8d31300e7a528eda017ca24adf251565fd0.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Moffat, CO; Rio Blanco, CO |
| Headline | Severe Thunderstorm Warning issued May 17 at 2:17PM MDT until May 17 at 2:30PM MDT by NWS Grand Junction CO |
| Expires | 2026-05-17T14:30:00-06:00 |
| SenderName | NWS Grand Junction CO |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 66 |
| Iem Unit | MPH |
| Iem City | 1 S Meeker |
| Iem County | Rio Blanco |
| Iem State | CO |
| Iem Wfo | GJT |
| MergedSources | [{"id":"iem_G_40.040_-107.890_1779047580000","source":"iem","severity":"low","severityValue":25,"timestamp":1779047580000,"latitude":40.04,"longitude":-107.89}] |
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.