Right now
The most recent data we hold from NOAA arrived 11 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 6 June 2026 at 04:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 42 detections recorded within 20 km of this point since 15 March 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 6 at 12:40AM EDT until June 6 at 12:45AM EDT by NWS Gaylord MI
An estimated 15,218 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 29, 2026 · score 40 · 11.6 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 81 % 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 | 81% |
| Coordinates | 45.1408, -85.5814 |
| Nearest City | Traverse City (42 km) |
| Population Exposed | 15.2K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-06T04:40:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.03e52c4c3083c2b21f4a25f714fe58f8 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Sleeping Bear Point to Grand Traverse Light MI; Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake; Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI; Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay; Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore |
| Headline | Special Marine Warning issued June 6 at 12:40AM EDT until June 6 at 12:45AM EDT by NWS Gaylord MI |
| Expires | 2026-06-06T00:45:00-04:00 |
| SenderName | NWS Gaylord MI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.03e52c4c3083c2b21f4a25f714fe58f8d04a53ed.001.1","noaa_urn:oid:2.49.0.1.840.0.a34944f7d94d5ac79e5ed05451b13c70540a73ce.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.
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