This alert expired on 5 June 2026 at 03:00 UTC. It is kept here as a record.
It is the 14th strongest of the 75 detections recorded within 20 km of this point since 2 June 2026. The last comparable one was on 3 June 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued June 4 at 3:14PM CDT until June 4 at 10:00PM CDT by NWS Bismarck ND
Nearby, since 2 June 2026
- August 31, 2026 · score 22 · 0.0 km
- August 11, 2026 · score 22 · 0.0 km
- July 17, 2026 · score 16 · 0.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 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 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 | 61% |
| Coordinates | 47.5000, -100.5000 |
| Nearest City | Bismarck (80 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-04T20:14:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.65ce098851483cd02284aa067181b53f17b922f1.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Adams, ND; Bowman, ND; Hettinger, ND; Slope, ND |
| Headline | Severe Thunderstorm Watch issued June 4 at 3:14PM CDT until June 4 at 10:00PM CDT by NWS Bismarck ND |
| Expires | 2026-06-04T22:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | false |
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.