Right now
The most recent data we hold from NOAA arrived 4 minutes ago, and this point is in it.
One other detection within 20 km in the last 24 hours, 16 km from here.
This alert expired on 8 September 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 21 recorded within 20 km of this point since 17 June 2026 — 7 others scored the same. The last comparable one was on 3 September 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 7 at 7:04PM CDT until September 7 at 8:00PM CDT by NWS Bismarck ND
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 28 out of 100, at 65 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 65% |
| Coordinates | 47.7160, -100.4840 |
| Nearest City | Minot (83 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-08T00:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.b9c5aaadf5140d5a2a0c5e75f0c5992f012a02e8.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | McHenry, ND; McLean, ND; Pierce, ND; Sheridan, ND; Wells, ND |
| Headline | Severe Thunderstorm Warning issued September 7 at 7:04PM CDT until September 7 at 8:00PM CDT by NWS Bismarck ND |
| Expires | 2026-09-07T20:00:00-05:00 |
| SenderName | NWS Bismarck ND |
| HasExactCoords | true |
| Spc ReportType | tornado |
| Spc Speed | UNK |
| Spc Location | 6 S Strawberry Lake |
| Spc County | McLean |
| Spc State | ND |
| Spc Comments | Multiple reports of a cone tornado that lasted less than a minute. Storm was still rapidly rotating after tornado dissipated. (BIS) |
| MergedSources | [{"id":"spc_tornado_47.67_-100.87_0","source":"spc","severity":"high","severityValue":78,"timestamp":1788827568156,"latitude":47.67,"longitude":-100.87}] |
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.
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Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.