This alert is in force until 31 August 2026, 04:00 UTC.
It is the 14th strongest of the 74 detections recorded within 20 km of this point since 2 June 2026. The last comparable one was on 30 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued August 30 at 8:15PM CDT until August 30 at 11:00PM CDT by NWS Bismarck ND
Nearby, since 2 June 2026
- August 11, 2026 · score 22 · 0.0 km
- July 17, 2026 · score 16 · 0.0 km
- July 16, 2026 · score 22 · 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.
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 | 2026-08-31T01:15:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Bottineau, ND; Burleigh, ND; Emmons, ND; McHenry, ND; Pierce, ND; Rolette, ND; Sheridan, ND |
| Headline | Severe Thunderstorm Watch issued August 30 at 8:15PM CDT until August 30 at 11:00PM CDT by NWS Bismarck ND |
| Expires | 2026-08-30T23:00:00-05:00 |
| 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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 22/100, near Bismarck (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.