This alert expired on 30 June 2026 at 02:15 UTC. It is kept here as a record.
No stronger detection stands among the 30 recorded within 20 km of this point since 31 March 2026 — one other scored the same. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued June 29 at 8:58PM CDT until June 29 at 9:15PM CDT by NWS Grand Forks ND
An estimated 194,125 people live within 50 km of this point.
Nearby, since 31 March 2026
- May 26, 2026 · score 43 · 13.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 67 out of 100, at 80 % 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) | 67 / 100 |
| Our confidence | 80% |
| Coordinates | 47.2782, -96.6737 |
| Nearest City | Fargo (45 km) |
| Population Exposed | 194.1K within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-06-30T01:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.b2ccea14067144f40b1da881356124bd |
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clay, MN; Polk, MN; Grand Forks, ND; Traill, ND |
| Headline | Tornado Warning issued June 29 at 8:58PM CDT until June 29 at 9:15PM CDT by NWS Grand Forks ND |
| Expires | 2026-06-29T21:15:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b2ccea14067144f40b1da881356124bd35f805ee.001.1","noaa_urn:oid:2.49.0.1.840.0.52dbbadb674bb3d2357077fbd5cf2be4aff4f91d.001.1"] |
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 67/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.