This alert expired on 29 June 2026 at 21:00 UTC. It is kept here as a record.
No stronger detection stands among the 172 recorded within 20 km of this point since 15 March 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 15 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 29 at 3:30PM CDT until June 29 at 4:00PM CDT by NWS Bismarck ND
An estimated 96,474 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 30, 2026 · score 45 · 4.8 km
- June 30, 2026 · score 45 · 10.3 km
- July 2, 2026 · score 39 · 18.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 63 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | critical |
| Calamity Score (ours) | 63 / 100 |
| Our confidence | 79% |
| Coordinates | 46.7900, -100.8680 |
| Nearest City | Mandan (5 km) |
| Population Exposed | 96.5K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-29T20:30:00.000Z |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Burleigh, ND; Morton, ND |
| Headline | Tornado Warning issued June 29 at 3:30PM CDT until June 29 at 4:00PM CDT by NWS Bismarck ND |
| Expires | 2026-06-29T16:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
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 63/100, near Mandan (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 188 scientific monitoring sources.