This alert expired on 4 July 2026 at 23:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 68 detections recorded within 20 km of this point since 15 March 2026. 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: Severe Thunderstorm Warning issued July 4 at 5:50PM CDT until July 4 at 6:30PM CDT by NWS Grand Forks ND
An estimated 160,528 people live within 50 km of this point.
Nearby, since 15 March 2026
- September 4, 2026 · score 49 · 16.8 km
- June 30, 2026 · score 67 · 21.9 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 88 % 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 | Medium |
| Calamity Score (ours) | 43 / 100 |
| Our confidence | 88% |
| Coordinates | 46.7720, -96.2020 |
| Nearest City | Moorhead (45 km) |
| Population Exposed | 160.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T22:50:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.aa4d927476251bbeac8d8e3cd47b747fdcc19f9f.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Becker, MN; Clay, MN; Otter Tail, MN |
| Headline | Severe Thunderstorm Warning issued July 4 at 5:50PM CDT until July 4 at 6:30PM CDT by NWS Grand Forks ND |
| Expires | 2026-07-04T18:30:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 SE New York Mills |
| Iem County | Otter Tail |
| Iem State | MN |
| Iem Wfo | FGF |
| Iem Remark | Storm spotter reports quarter sized hail southeast of New York Mills, MN. |
| MergedSources | [{"id":"iem_H_46.690_-95.360_1783191360000","source":"iem","severity":"low","severityValue":25,"timestamp":1783191360000,"latitude":46.69,"longitude":-95.36},{"id":"iem_H_46.510_-95.360_1783189440000","source":"iem","severity":"low","severityValue":25,"timestamp":1783189440000,"latitude":46.51,"longitude":-95.36}] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.