Right now
The most recent data we hold from NOAA arrived 48 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 3 July 2026 at 23:45 UTC. It is kept here as a record.
No stronger detection stands among the 11 recorded within 20 km of this point since 18 May 2026 — 8 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 3 at 6:58PM EDT until July 3 at 7:45PM EDT by NWS Detroit/Pontiac MI
Urban PEI: 1,966,254 within a heuristic 50 km radius; not unique people.
Nearby, since 18 May 2026
- June 12, 2026 · score 52 · 4.7 km
- May 18, 2026 · score 52 · 8.8 km
- June 12, 2026 · score 52 · 11.5 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 52 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) | 52 / 100 |
| Legacy data-support index | 0.83/1 |
| Coordinates | 42.0992, -82.8547 |
| Nearest City | Kingsville (10 km) |
| Urban exposure index (PEI) | 2.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-03T22:58:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.121a0dc698b61fb6a0833071aa11d9dd |
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: 2026-07-03T22:58:00.000Z.
First archived: 2026-07-03T23:02:57.481Z. 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; Detroit River; Lake St. Clair Open Lake (U.S. Portion); Maumee Bay to Reno Beach OH; Reno Beach to The Islands OH; The Islands to Vermilion OH; Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border; Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border; The Islands to Vermilion OH beyond 5 nm off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued July 3 at 6:58PM EDT until July 3 at 7:45PM EDT by NWS Detroit/Pontiac MI |
| Expires | 2026-07-03T19:45:00-04:00 |
| SenderName | NWS Detroit/Pontiac MI |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.121a0dc698b61fb6a0833071aa11d9dde41a9cb1.002.1","noaa_urn:oid:2.49.0.1.840.0.73b2a021b34c2a72a5957bb1e2469c19e6f53025.001.1"] |
| Google News RssFeed | weather |
| Google News SourceName | The Detroit News |
| MergedSources | [{"id":"gnews_weather_495310_217","source":"google_news","severity":"medium","severityValue":40,"timestamp":1783116120000,"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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