This alert expired on 10 August 2026 at 15:00 UTC. It is kept here as a record.
It is the 27th strongest of the 103 detections recorded within 20 km of this point since 8 June 2026. 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 August 10 at 9:50AM CDT until August 10 at 10:00AM CDT by NWS Bismarck ND
An estimated 49,450 people live within 50 km of this point.
Nearby, since 8 June 2026
- June 28, 2026 · score 34 · 9.6 km
- June 30, 2026 · score 40 · 13.4 km
- June 17, 2026 · score 34 · 15.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 85 % 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) | 34 / 100 |
| Our confidence | 85% |
| Coordinates | 47.8683, -101.1350 |
| Nearest City | Minot (42 km) |
| Population Exposed | 49.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-10T14:50:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.1b58e3115b5a62d78a5fa6242e2bbd75e870a727.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | McHenry, ND; McLean, ND; Ward, ND |
| Headline | Severe Thunderstorm Warning issued August 10 at 9:50AM CDT until August 10 at 10:00AM CDT by NWS Bismarck ND |
| Expires | 2026-08-10T10:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1.5 |
| Iem Unit | Inch |
| Iem City | 8 NE Douglas |
| Iem County | Ward |
| Iem State | ND |
| Iem Wfo | BIS |
| MergedSources | [{"id":"iem_H_47.940_-101.380_1786371600000","source":"iem","severity":"low","severityValue":25,"timestamp":1786371600000,"latitude":47.94,"longitude":-101.38}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.