This alert expired on 9 May 2026 at 23:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 30 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 15 April 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 9 at 5:52PM EDT until May 9 at 7:15PM EDT by NWS Cleveland OH
An estimated 743,690 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 10, 2026 · score 48 · 6.9 km
- July 18, 2026 · score 48 · 7.1 km
- August 19, 2026 · score 48 · 7.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 48 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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 |
| Our confidence | 79% |
| Coordinates | 41.8457, -81.3225 |
| Nearest City | Painesville (15 km) |
| Population Exposed | 743.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T21:52:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.b508817553bd9ada64e726f194e57184 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Conneaut OH to Ripley NY; Conneaut OH to Ripley NY beyond 5 nm off shoreline to US-Canadian border; The Islands to Vermilion OH; Vermilion to Avon Point OH; Avon Point to Willowick OH; Willowick to Geneva-on-the Lake OH; Geneva-on-the-Lake to Conneaut OH; Conneaut OH to Ripley NY; The Islands to Vermilion OH beyond 5 nm off shoreline to US-Canadian border; Vermilion to Avon Point OH beyond 5 nm off shoreline to US-Canadian border; Avon Point to Willowick OH beyond 5 nm off shoreline to US-Canadian border; Willowick to Geneva-on-the-Lake OH beyond 5NM off shoreline to US-Canadian border; Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border; The Islands to Vermilion OH |
| Headline | Special Marine Warning issued May 9 at 5:52PM EDT until May 9 at 7:15PM EDT by NWS Cleveland OH |
| Expires | 2026-05-09T19:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b508817553bd9ada64e726f194e57184fe16c39c.001.1","noaa_urn:oid:2.49.0.1.840.0.32f58353f92a765f64204fb3a6df58cf17b092d7.001.1","noaa_urn:oid:2.49.0.1.840.0.e923d774f10047b2e53b8fbb5d3130ec5f8c034d.001.1"] |
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.
Want to know when something happens near Painesville?
Calamity.live data shows a weather event with CalamityScore 48/100, near Painesville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.