Right now
The most recent data we hold from NOAA arrived 12 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 25 June 2026 at 23:00 UTC. It is kept here as a record.
It is the 14th strongest of the 34 detections recorded within 20 km of this point since 15 April 2026. Another comparable one was recorded here earlier the same day. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 25 at 6:32PM EDT until June 25 at 7:00PM EDT by NWS Detroit/Pontiac MI
Urban PEI: 913,840 within a heuristic 50 km radius; not unique people.
Nearby, since 15 April 2026
- September 3, 2026 · score 46 · 6.7 km
- August 22, 2026 · score 52 · 14.4 km
- July 18, 2026 · score 52 · 16.2 km
How we know
9 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 48 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) | 48 / 100 |
| Legacy data-support index | 0.87/1 |
| Coordinates | 42.7285, -82.5820 |
| Nearest City | Mount Clemens (28 km) |
| Urban exposure index (PEI) | 913.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-25T22:32:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.2393c0179d22419a87b8875f5212677823375ca4.002.1 |
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: 2026-06-25T22:32:00.000Z.
First archived: 2026-06-25T22:43:20.680Z. 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 | St. Clair River; Lake St. Clair Open Lake (U.S. Portion) |
| Headline | Special Marine Warning issued June 25 at 6:32PM EDT until June 25 at 7:00PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-06-25T19:00:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.88 |
| Iem Unit | inch |
| Iem City | Kimball |
| Iem County | St. Clair |
| Iem State | MI |
| Iem Wfo | DTX |
| Google News RssFeed | weather |
| Google News SourceName | WXYZ Channel 7 |
| MergedSources | [{"id":"iem_H_43.140_-83.310_1782421800000","source":"iem","severity":"low","severityValue":25,"timestamp":1782421800000,"latitude":43.14,"longitude":-83.31},{"id":"iem_H_43.040_-82.460_1782416100000","source":"iem","severity":"low","severityValue":25,"timestamp":1782416100000,"latitude":43.04,"longitude":-82.46},{"id":"iem_H_43.010_-82.930_1782422880000","source":"iem","severity":"low","severityValue":25,"timestamp":1782422880000,"latitude":43.01,"longitude":-82.93},{"id":"iem_H_43.030_-82.990_1782422640000","source":"iem","severity":"low","severityValue":25,"timestamp":1782422640000,"latitude":43.03,"longitude":-82.99},{"id":"iem_H_42.990_-82.770_1782423900000","source":"iem","severity":"low","severityValue":25,"timestamp":1782423900000,"latitude":42.99,"longitude":-82.77},{"id":"iem_H_43.070_-83.060_1782421860000","source":"iem","severity":"low","severityValue":25,"timestamp":1782421860000,"latitude":43.07,"longitude":-83.06},{"id":"iem_H_42.950_-82.560_1782415140000","source":"iem","severity":"low","severityValue":25,"timestamp":1782415140000,"latitude":42.95,"longitude":-82.56},{"id":"gnews_weather_495115_135","source":"google_news","severity":"medium","severityValue":40,"timestamp":1782415484000,"latitude":42.33,"longitude":-83.05}] |
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.
Review the area, threshold and delivery channel in your account.
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