Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
2 other detections within 20 km in the last 24 hours, the nearest 7 km from here.
This alert expired on 12 September 2026 at 01:00 UTC. It is kept here as a record.
No stronger detection stands among the 182 recorded within 20 km of this point since 15 March 2026 — 2 others scored the same. The last comparable one was on 29 August 2026. 16 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued September 11 at 7:12PM CDT until September 11 at 8:00PM CDT by NWS Grand Forks ND
Nearby, since 15 March 2026
- September 12, 2026 · score 46 · 6.8 km
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 61 % 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 | Critical |
| Calamity Score (ours) | 46 / 100 |
| Our confidence | 61% |
| Coordinates | 46.5657, -95.0414 |
| Nearest City | Sartell (123 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-12T00:12:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.10d320ff579c459cd1c1df350ac977ef99742e84.001.1 |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Otter Tail, MN; Wadena, MN |
| Headline | Tornado Warning issued September 11 at 7:12PM CDT until September 11 at 8:00PM CDT by NWS Grand Forks ND |
| Expires | 2026-09-11T20:00:00-05:00 |
| SenderName | NWS Grand Forks 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.
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