Right now
The most recent data we hold from NOAA arrived 3 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
4 other detections within 20 km in the last 24 hours, the nearest 16 km from here.
This alert expired on 6 September 2026 at 23:15 UTC. It is kept here as a record.
It is the 9th strongest of the 17 detections recorded within 20 km of this point since 7 June 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 6 at 5:58PM CDT until September 6 at 6:15PM CDT by NWS Bismarck ND
Nearby, since 7 June 2026
- July 5, 2026 · score 22 · 17.1 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 59 % 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 | 59% |
| Coordinates | 47.8811, -102.5333 |
| Nearest City | Williston (86 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-06T22:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.9c8f4caad487d525df5a7c08a468db3f1ec73f73.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | McKenzie, ND; Mountrail, ND |
| Headline | Severe Thunderstorm Warning issued September 6 at 5:58PM CDT until September 6 at 6:15PM CDT by NWS Bismarck ND |
| Expires | 2026-09-06T18:15:00-05:00 |
| SenderName | NWS Bismarck ND |
| 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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.