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.
One other detection within 20 km in the last 24 hours, 18 km from here.
This alert expired on 2 August 2026 at 18:15 UTC. It is kept here as a record.
It is the 19th strongest of the 78 detections recorded within 20 km of this point since 12 March 2026. The last comparable one was on 28 July 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 2 at 1:10PM EDT until August 2 at 2:15PM EDT by NWS Cleveland OH
Urban PEI: 58,336 within a heuristic 50 km radius; not unique people.
Nearby, since 12 March 2026
- July 28, 2026 · score 39 · 3.6 km
- August 10, 2026 · score 39 · 6.8 km
- September 3, 2026 · score 37 · 8.2 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 39 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) | 39 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 41.5889, -82.8400 |
| Nearest City | Sandusky (19 km) |
| Urban exposure index (PEI) | 58.3K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-02T17:10:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.a63bf4622d74543412b952e390fa49f86ee6cc26.001.1 |
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: 2026-08-02T17:10:00.000Z.
First archived: 2026-08-02T17:44:37.950Z. 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 | Reno Beach to The Islands OH; The Islands to Vermilion OH; Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued August 2 at 1:10PM EDT until August 2 at 2:15PM EDT by NWS Cleveland OH |
| Expires | 2026-08-02T14:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| Iem TypeSummary | R |
| Iem Magnitude | 1.06 |
| Iem Unit | inch |
| Iem City | 1 NW Monroe |
| Iem County | Monroe |
| Iem State | MI |
| Iem Wfo | DTX |
| Iem Remark | 24 hour rainfall. |
| MergedSources | [{"id":"iem_R_42.060_-83.260_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":42.06,"longitude":-83.26},{"id":"iem_R_41.920_-83.390_1785672000000","source":"iem","severity":"low","severityValue":25,"timestamp":1785672000000,"latitude":41.92,"longitude":-83.39}] |
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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