This alert expired on 9 June 2026 at 23:15 UTC. It is kept here as a record.
The last comparable one was on 8 April 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued June 9 at 5:34PM CDT until June 9 at 6:15PM CDT by NWS Bismarck ND
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 60 % 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 | 60% |
| Coordinates | 46.8928, -101.7302 |
| Nearest City | Mandan (64 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-09T22:34:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Grant, ND; Sioux, ND; Mercer, ND; Morton, ND; Oliver, ND; Stark, ND; McLean, ND; Mercer, ND; Oliver, ND |
| Headline | Severe Thunderstorm Warning issued June 9 at 5:34PM CDT until June 9 at 6:15PM CDT by NWS Bismarck ND |
| Expires | 2026-06-09T18:15:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.372cba55ad75961718d040c508cbc04ba1530988.001.1","noaa_urn:oid:2.49.0.1.840.0.23d1bffe283a93f74440d7dfce8bffe1efde7f3a.001.1","noaa_urn:oid:2.49.0.1.840.0.8c636a412fa198cc48c6b81d18261343fa2c0820.001.1"] |
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 Mandan (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.