This alert expired on 8 June 2026 at 02:15 UTC. It is kept here as a record.
It is the strongest of the 16 detections recorded within 20 km of this point since 14 May 2026. The last comparable one was on 7 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 7 at 8:39PM CDT until June 7 at 9:15PM 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 46 out of 100, at 60 % 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 | Critical |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 60% |
| Coordinates | 48.8800, -103.1583 |
| Nearest City | Williston (88 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-08T01:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e53cd31af28a929b703b1c2a31cb4c1de0d1eb33.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Divide, ND |
| Headline | Tornado Warning issued June 7 at 8:39PM CDT until June 7 at 9:15PM CDT by NWS Bismarck ND |
| Expires | 2026-06-07T21:15:00-05:00 |
| 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 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 46/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.