Right now
The most recent data we hold from NOAA arrived 10 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 10 June 2026 at 22:45 UTC. It is kept here as a record.
It is the 10th strongest of the 14 detections recorded within 20 km of this point since 13 May 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 4:59PM CDT until June 10 at 5:45PM CDT by NWS Green Bay WI
Nearby, since 13 May 2026
- June 10, 2026 · score 16 · 11.8 km
- July 8, 2026 · score 22 · 24.5 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.
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) | 16 / 100 |
| Legacy data-support index | 0.59/1 |
| Coordinates | 43.9038, -86.8072 |
| Nearest City | Manitowoc (71 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-10T21:59:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.7af4599b89ece20a49f20b1131c4f31a |
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: 2026-06-10T21:59:00.000Z.
First archived: 2026-06-10T22:09:52.936Z. 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 | Sturgeon Bay to Two Rivers WI; Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake; Sleeping Bear Point to Grand Traverse Light MI; Point Betsie to Sleeping Bear Point MI; Manistee to Point Betsie MI; Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake; Rock Island Passage to Sturgeon Bay WI; Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake and 6 more areas |
| Headline | Special Marine Warning issued June 10 at 4:59PM CDT until June 10 at 5:45PM CDT by NWS Green Bay WI |
| Expires | 2026-06-10T17:45:00-05:00 |
| SenderName | NWS Green Bay WI |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.7af4599b89ece20a49f20b1131c4f31a52ec02ce.002.1","noaa_urn:oid:2.49.0.1.840.0.6e64deea4923d66b6afe5885aa60be8467635ba2.001.1","noaa_urn:oid:2.49.0.1.840.0.9bc1b9caa997ea3307ed65f80c27bbf65b1a02f3.001.1","noaa_urn:oid:2.49.0.1.840.0.f8d56c254e057e982d2b40ba4b541ad92f56dcbb.001.1","noaa_urn:oid:2.49.0.1.840.0.9b883b892de9343be280cfe22dbb7b67206720c7.001.1","noaa_urn:oid:2.49.0.1.840.0.780439d3b8a53a59cc56aca86302ff89e1133af4.001.1","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.ea99439853224ce087ee17ca097d2c2635a2d352.001.1"] |
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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