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 6 June 2026 at 07:30 UTC. It is kept here as a record.
It is the 19th strongest of the 49 detections recorded within 20 km of this point since 10 March 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 6 at 12:52AM CDT until June 6 at 2:30AM CDT by NWS Chicago IL
Nearby, since 10 March 2026
- September 5, 2026 · score 16 · 5.4 km
- May 18, 2026 · score 22 · 6.4 km
- September 5, 2026 · score 16 · 8.9 km
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, at 61 % 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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 42.2260, -86.9617 |
| Nearest City | Michigan City (58 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-06T05:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.dc5ab7034072d92ea78f28b2a447be0c |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake; Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake; New Buffalo MI to St Joseph MI; Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.; St Joseph to South Haven MI; South Haven to Holland MI; Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake; Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake |
| Headline | Special Marine Warning issued June 6 at 12:52AM CDT until June 6 at 2:30AM CDT by NWS Chicago IL |
| Expires | 2026-06-06T02:30:00-05:00 |
| SenderName | NWS Chicago IL |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.dc5ab7034072d92ea78f28b2a447be0c9a4747e6.001.1","noaa_urn:oid:2.49.0.1.840.0.87eec22b75323cc8f59ef6bf3a64c12f808953bc.001.1","noaa_urn:oid:2.49.0.1.840.0.057091860f103f5cd85b2b8d39fa6fca888340e5.001.1"] |
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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