This alert expired on 3 September 2026 at 14:30 UTC. It is kept here as a record.
It is the 20th strongest of the 36 detections recorded within 20 km of this point since 17 June 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Flash Flood Warning issued September 3 at 6:18AM CDT until September 3 at 9:30AM CDT by NWS Bismarck ND
An estimated 49,450 people live within 50 km of this point.
Nearby, since 17 June 2026
- June 17, 2026 · score 34 · 12.2 km
- August 10, 2026 · score 34 · 17.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 81 % 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) | 28 / 100 |
| Our confidence | 81% |
| Coordinates | 48.0000, -101.2670 |
| Nearest City | Minot (26 km) |
| Population Exposed | 49.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-03T11:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.a3e4fa90680df59e75922ea1348b4629164301b3.001.1 |
Score Breakdown
Technical Details
| Event | Flash Flood Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | McHenry, ND; Ward, ND |
| Headline | Flash Flood Warning issued September 3 at 6:18AM CDT until September 3 at 9:30AM CDT by NWS Bismarck ND |
| Expires | 2026-09-03T09:30:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
Safety Information
During flooding: never walk, swim, or drive through floodwaters. Six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Move to higher ground if waters rise. After flooding, avoid contact with floodwater which may contain sewage, chemicals, or debris. Follow local emergency service guidance.
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 near Minot?
Calamity.live data shows a weather event with CalamityScore 28/100, near Minot (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.