Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 3 km from here.
This alert expired on 13 September 2026 at 02:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 6 detections recorded within 20 km of this point since 22 April 2026. The last comparable one was on 29 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 12 at 8:00PM MDT until September 12 at 8:30PM MDT by NWS Grand Junction CO
Nearby, since 22 April 2026
- September 13, 2026 · score 16 · 11.2 km
- August 29, 2026 · score 22 · 17.9 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, at 61 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. 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 |
| Our confidence | 61% |
| Coordinates | 39.4400, -109.9950 |
| Nearest City | Grand Junction (131 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-13T02:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.e81bf40cc99bbcfc36a8efd1f578d0b7e0344baf.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grand, UT; Uintah, UT |
| Headline | Severe Thunderstorm Warning issued September 12 at 8:00PM MDT until September 12 at 8:30PM MDT by NWS Grand Junction CO |
| Expires | 2026-09-12T20:30:00-06:00 |
| SenderName | NWS Grand Junction CO |
| HasExactCoords | true |
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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