This alert expired on 31 August 2026 at 04:15 UTC. It is kept here as a record.
No stronger detection stands among the 11 recorded within 20 km of this point since 3 June 2026 — 7 others scored the same. The last comparable one was on 25 August 2026.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued August 30 at 10:18PM CDT until August 30 at 11:15PM CDT by NWS Grand Forks ND
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 61 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 47.4990, -98.4172 |
| Nearest City | Jamestown (69 km) |
| Impact Tier | minor |
| Timestamp | 2026-08-31T03:18:00.000Z |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Benson, ND; Eddy, ND; Nelson, ND; Ramsey, ND; Foster, ND; Stutsman, ND; Barnes, ND; Griggs, ND |
| Headline | Severe Thunderstorm Warning issued August 30 at 10:18PM CDT until August 30 at 11:15PM CDT by NWS Grand Forks ND |
| Expires | 2026-08-30T23:15:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7ea067f6c08e4740c87f007809b6520676acdce4.001.1","noaa_urn:oid:2.49.0.1.840.0.8d6b9b4f0f59439a0bc40b5a9f7b3f47c709fbd0.001.1","noaa_urn:oid:2.49.0.1.840.0.e50eb162cd0365279e211654a4a22ae4e99c5ae6.001.1"] |
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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 22/100, near Jamestown (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.