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.
3 other detections within 20 km in the last 24 hours, the nearest 15 km from here.
This alert expired on 7 September 2026 at 00:15 UTC. It is kept here as a record.
It is the 14th strongest of the 69 detections recorded within 20 km of this point since 3 April 2026. Another comparable one was recorded here earlier the same day.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 6 at 6:38PM CDT until September 6 at 7:15PM CDT by NWS Grand Forks ND
An estimated 57,011 people live within 50 km of this point.
Nearby, since 3 April 2026
- June 4, 2026 · score 32 · 3.6 km
- June 3, 2026 · score 32 · 6.7 km
- July 24, 2026 · score 63 · 12.0 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 32 out of 100, at 90 % 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 | Medium |
| Calamity Score (ours) | 32 / 100 |
| Our confidence | 90% |
| Coordinates | 48.0763, -96.7413 |
| Nearest City | Grand Forks (27 km) |
| Population Exposed | 57.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-06T23:38:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.d22cb3e6811192734755ff365fbe22c6f8e38136.002.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Marshall, MN; Pennington, MN; Polk, MN; Red Lake, MN; Walsh, ND |
| Headline | Severe Thunderstorm Warning issued September 6 at 6:38PM CDT until September 6 at 7:15PM CDT by NWS Grand Forks ND |
| Expires | 2026-09-06T19:15:00-05:00 |
| SenderName | NWS Grand Forks ND |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | 62 |
| Spc Location | 1 NE Northwood |
| Spc County | Grand Forks |
| Spc State | ND |
| Spc Comments | 62 mph gust reading on handheld kestrel east of Northwood. 35-40mph sustained. (FGF) |
| Iem TypeSummary | G |
| Iem Magnitude | 62 |
| Iem Unit | MPH |
| Iem City | 1 NE Northwood |
| Iem County | Grand Forks |
| Iem State | ND |
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 near Grand Forks?
Calamity.live data shows a weather event with CalamityScore 32/100, near Grand Forks (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.