Right now
The most recent data we hold from NOAA arrived 6 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 10 June 2026 at 11:30 UTC. It is kept here as a record.
It is the 3rd strongest of the 51 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 5 June 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 4:33AM CDT until June 10 at 6:30AM CDT by NWS Duluth MN
An estimated 112,689 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 5, 2026 · score 43 · 8.9 km
- May 24, 2026 · score 43 · 9.3 km
- July 17, 2026 · score 43 · 23.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 82 % 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 | 82% |
| Coordinates | 46.7943, -91.7100 |
| Nearest City | Duluth (30 km) |
| Population Exposed | 112.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T09:33:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.e702d9df5f26d82e9997d977e4758cb17fbe421d.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Taconite Harbor to Silver Bay Harbor MN; Silver Bay Harbor to Two Harbors MN; Two Harbors to Duluth MN; Duluth MN to Port Wing WI; Port Wing to Sand Island WI; Sand Island to Bayfield WI; Outer Apostle Islands Beyond 5 NM from Mainland; Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM |
| Headline | Special Marine Warning issued June 10 at 4:33AM CDT until June 10 at 6:30AM CDT by NWS Duluth MN |
| Expires | 2026-06-10T06:30:00-05:00 |
| SenderName | NWS Duluth MN |
| HasExactCoords | true |
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 Duluth?
Calamity.live data shows a weather event with CalamityScore 43/100, near Duluth (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.