This alert expired on 28 June 2026 at 06:22 UTC. It is kept here as a record.
No stronger detection stands among the 16 recorded within 20 km of this point since 4 April 2026 — 2 others 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: Severe Thunderstorm Warning issued June 28 at 1:13AM CDT until June 28 at 1:15AM CDT by NWS Grand Forks ND
An estimated 15,422 people live within 50 km of this point.
Nearby, since 4 April 2026
- July 24, 2026 · score 28 · 10.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 79 % 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) | 34 / 100 |
| Our confidence | 79% |
| Coordinates | 46.4697, -98.7461 |
| Nearest City | Jamestown (49 km) |
| Population Exposed | 15.4K within 50 km |
| Impact Tier | significant |
| Date | 2026-06-28 — time not reported by the source |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.9c0566399e7f347c661ba007abaad5e6 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Benson, ND; Eddy, ND; Ramsey, ND; Foster, ND; Stutsman, ND; Brown, SD and 1 more areas |
| Headline | Severe Thunderstorm Warning issued June 28 at 1:13AM CDT until June 28 at 1:15AM CDT by NWS Grand Forks ND |
| Expires | 2026-06-28T01:22:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.9c0566399e7f347c661ba007abaad5e68c7b0ba6.001.1","noaa_urn:oid:2.49.0.1.840.0.fa6a67f577dc31a3bd7ded9ff88df0f98cad8fa5.002.1","noaa_urn:oid:2.49.0.1.840.0.294885a45dca391cd186e13bccabad76bacbe338.002.1","noaa_urn:oid:2.49.0.1.840.0.982262bc9877ba6d4a5f41346dcb59b33363a13f.001.1"] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.