Right now
The most recent data we hold from NOAA arrived 4 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 29 June 2026 at 11:45 UTC. It is kept here as a record.
No stronger detection stands among the 13 recorded within 20 km of this point since 29 June 2026 — one other scored the same.
What the source measured
NOAA reported: Special Marine Warning issued June 29 at 7:02AM EDT until June 29 at 7:45AM EDT by NWS Marquette MI
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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 | High |
| Calamity Score (ours) | 28 / 100 |
| Legacy data-support index | 0.65/1 |
| Coordinates | 45.5883, -86.3367 |
| Nearest City | Traverse City (108 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-29T11:02:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.36e34a27d5182dd88518ae6473f753f74fa2dd2f.001.1 |
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: 2026-06-29T11:02:00.000Z.
First archived: 2026-06-29T11:13:35.474Z. 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 | Seul Choix Point to Point Detour MI; 5NM East of a line from Fairport MI to Rock Island Passage; Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake |
| Headline | Special Marine Warning issued June 29 at 7:02AM EDT until June 29 at 7:45AM EDT by NWS Marquette MI |
| Expires | 2026-06-29T07:45:00-04:00 |
| SenderName | NWS Marquette MI |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 125 |
| Spc Location | 2 E Sister Bay |
| Spc County | Door |
| Spc State | WI |
| Spc Comments | Report from mPING: Half Dollar (1.25 in.) Time estimated from radar. (GRB) |
| MergedSources | [{"id":"spc_hail_45.19_-87.06_51","source":"spc","severity":"high","severityValue":65,"timestamp":1782723900000,"latitude":45.19,"longitude":-87.06}] |
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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