Right now
The most recent data we hold from NOAA arrived 16 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
One other detection within 20 km in the last 24 hours, <1 km from here.
This alert expired on 8 September 2026 at 04:00 UTC. It is kept here as a record.
It is the 14th strongest of the 79 detections recorded within 20 km of this point since 2 June 2026. The last comparable one was on 31 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Watch issued September 7 at 5:42PM CDT until September 7 at 11:00PM CDT by NWS Grand Forks ND
Nearby, since 2 June 2026
- September 8, 2026 · score 28 · 0.0 km
- September 7, 2026 · score 28 · 0.0 km
- August 31, 2026 · score 22 · 0.0 km
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 | 47.5000, -100.5000 |
| Nearest City | Bismarck (80 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-07T22:42:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0d1b6a25380cf626d025a7276bfe08be229edfa8.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Watch |
| Urgency | Future |
| Certainty | Possible |
| AreaDesc | Benson, ND; Ramsey, ND; Towner, ND; Bottineau, ND; Burke, ND; McHenry, ND; McLean, ND; Mountrail, ND; Pierce, ND; Renville, ND; Rolette, ND; Sheridan, ND; Ward, ND; Wells, ND |
| Headline | Severe Thunderstorm Watch issued September 7 at 5:42PM CDT until September 7 at 11:00PM CDT by NWS Grand Forks ND |
| Expires | 2026-09-07T23:00:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | false |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.0d1b6a25380cf626d025a7276bfe08be229edfa8.001.1","noaa_urn:oid:2.49.0.1.840.0.dbcf2327e407fb506b87cea2b7cb93769d5a1663.001.1"] |
| 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":1788828687907,"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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