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 12 July 2026 at 14:45 UTC. It is kept here as a record.
No stronger detection stands among the 70 recorded within 20 km of this point since 16 March 2026 — 23 others scored the same. Another comparable one was recorded here earlier the same day. 30 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 12 at 9:58AM EDT until July 12 at 10:45AM EDT by NWS Marquette MI
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.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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) | 22 / 100 |
| Legacy data-support index | 0.61/1 |
| Coordinates | 47.1210, -88.3320 |
| Nearest City | Marquette (96 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-07-12T13:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0b15394ad5a6b43683cb3c36ead573d5784dfede.001.1 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-12T13:58:00.000Z.
First archived: 2026-07-12T14:28:30.407Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Ontonagon to Upper Entrance of Portage Canal MI; Upper Entrance of Portage Canal to Eagle River MI; Eagle River to Manitou Island MI; Point Isabelle to Lower Entrance of Portage Canal MI; Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays; Huron Islands to Marquette MI; Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park; Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border; Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore |
| Headline | Special Marine Warning issued July 12 at 9:58AM EDT until July 12 at 10:45AM EDT by NWS Marquette MI |
| Expires | 2026-07-12T10:45:00-04:00 |
| SenderName | NWS Marquette MI |
| 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.
Review the area, threshold and delivery channel in your account.
Want to know when something happens in this area?