This alert expired on 12 June 2026 at 01:30 UTC. It is kept here as a record.
It is the 27th strongest of the 30 detections recorded within 20 km of this point since 18 May 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 11 at 8:48PM EDT until June 11 at 9:30PM EDT by NWS Northern Indiana
Nearby, since 18 May 2026
- August 9, 2026 · score 22 · 5.3 km
- July 27, 2026 · score 22 · 10.0 km
- June 8, 2026 · score 22 · 14.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 60 % 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) | 16 / 100 |
| Our confidence | 60% |
| Coordinates | 42.4916, -87.1318 |
| Nearest City | Kenosha (57 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-12T00:48:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.37e7837dcfa446dd34948f191a00ac06 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | New Buffalo MI to St Joseph MI; Michigan City IN to New Buffalo MI; Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.; Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake; Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake; South Haven to Holland MI; Holland to Grand Haven MI; Grand Haven to Whitehall MI; Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake; Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake; Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake and 3 more areas |
| Headline | Special Marine Warning issued June 11 at 8:48PM EDT until June 11 at 9:30PM EDT by NWS Northern Indiana |
| Expires | 2026-06-11T21:30:00-04:00 |
| SenderName | NWS Northern Indiana |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.37e7837dcfa446dd34948f191a00ac069325285d.001.1","noaa_urn:oid:2.49.0.1.840.0.decc03553afec673065f8474cee9f1263a4e6a77.001.1","noaa_urn:oid:2.49.0.1.840.0.49d01c15ce958ff9aa7d1697ec90f42108869461.001.1","noaa_urn:oid:2.49.0.1.840.0.e76f077f46d068b60dc91687f65ac6f5f4db8d9f.001.1","noaa_urn:oid:2.49.0.1.840.0.a25fda3d7ddc60c85b0c72cf9175e3920490e42c.001.1","noaa_urn:oid:2.49.0.1.840.0.3644aff7ff47dc84004c67f0c8f03136ec8d0470.001.1"] |
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 16/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.