Right now
The most recent data we hold from NOAA arrived 5 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 18:45 UTC. It is kept here as a record.
No stronger detection stands among the 51 recorded within 20 km of this point since 15 March 2026 — 5 others scored the same. Another comparable one was recorded here earlier the same day. 10 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 29 at 2:21PM EDT until June 29 at 2:45PM EDT by NWS Gaylord MI
How we know
18 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 | 0.70/1 |
| Coordinates | 45.4588, -85.1200 |
| Nearest City | Traverse City (87 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-06-29T18:21:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a63e962323969ef3e11c553180ae43737d21c894.001.1 |
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: 2026-06-29T18:21:00.000Z.
First archived: 2026-06-29T18:42:01.865Z. 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 | Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay |
| Headline | Special Marine Warning issued June 29 at 2:21PM EDT until June 29 at 2:45PM EDT by NWS Gaylord MI |
| Expires | 2026-06-29T14:45:00-04:00 |
| SenderName | NWS Gaylord MI |
| HasExactCoords | true |
| Spc ReportType | hail |
| Spc Speed | 175 |
| Spc Location | Alba |
| Spc County | Antrim |
| Spc State | MI |
| Spc Comments | (APX) |
| Iem TypeSummary | W |
| Iem City | 4 WNW Harbor Springs |
| Iem County | LMZ342 |
| Iem State | MI |
| Iem Wfo | APX |
| Iem Remark | Waterspout reported over northern Little Traverse Bay, viewed from Petoskey. |
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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