This alert expired on 10 June 2026 at 23:00 UTC. It is kept here as a record.
It is the strongest of the 6 detections recorded within 20 km of this point since 10 June 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 5:32PM EDT until June 10 at 7:00PM EDT by NWS Gaylord MI
An estimated 48,797 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 80 % 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) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 43.5249, -87.1790 |
| Nearest City | Sheboygan (50 km) |
| Population Exposed | 48.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-10T21:32:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.8a0db34808f64c0b41a15106a42cf8e3 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Manistee to Point Betsie MI; Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake; Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI; Sturgeon Bay to Two Rivers WI; Two Rivers to Sheboygan WI; Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake; Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake and 8 more areas |
| Headline | Special Marine Warning issued June 10 at 5:32PM EDT until June 10 at 7:00PM EDT by NWS Gaylord MI |
| Expires | 2026-06-10T19:00:00-04:00 |
| SenderName | NWS Gaylord MI |
| HasExactCoords | true |
| MergedCount | 11 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.8a0db34808f64c0b41a15106a42cf8e328005b75.001.1","noaa_urn:oid:2.49.0.1.840.0.92a1583bc2209275d1be0b0a9f403bdd2290146c.001.1","noaa_urn:oid:2.49.0.1.840.0.d3c2b7cd40571ced49bbbe970d4d27cf6c7658d9.001.1","noaa_urn:oid:2.49.0.1.840.0.bbd78c452dd688cc9c1a6d78a6f7c68e8d4188fc.001.1","noaa_urn:oid:2.49.0.1.840.0.ba53d52f3341594a9ab744f4e9fc414b0cae6cad.001.1","noaa_urn:oid:2.49.0.1.840.0.6492b1e0708e1f3a7d54b740d67d9f16a32a4114.001.1","noaa_urn:oid:2.49.0.1.840.0.36af92dc1e71746d0bde9f441f162e3806f71c32.001.1","noaa_urn:oid:2.49.0.1.840.0.5327fff5e54dc18823f169ea308bb3c84704b53b.001.1","noaa_urn:oid:2.49.0.1.840.0.0e11578db448428963edf56ca1936a7e4fa5198d.001.1","noaa_urn:oid:2.49.0.1.840.0.4c9ea0386bad0012906a5b1a43cde141599edff6.001.1","noaa_urn:oid:2.49.0.1.840.0.7426a4bcea40eb000358ad67bfb9d7f45f922c2d.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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 28/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.