This alert expired on 21 July 2026 at 13:15 UTC. It is kept here as a record.
It is the 5th strongest of the 34 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 18 July 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 21 at 9:05AM EDT until July 21 at 9:15AM EDT by NWS Cleveland OH
An estimated 192,427 people live within 50 km of this point.
Nearby, since 17 March 2026
- September 3, 2026 · score 37 · 8.9 km
- July 4, 2026 · score 43 · 11.4 km
- July 18, 2026 · score 48 · 15.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 43 out of 100, at 81 % 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) | 43 / 100 |
| Our confidence | 81% |
| Coordinates | 41.8547, -81.1001 |
| Nearest City | Painesville (19 km) |
| Population Exposed | 192.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-21T13:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.f13246532803f0d42d764a704a7781ff |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Avon Point to Willowick OH; Willowick to Geneva-on-the Lake OH; 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; Conneaut OH to Ripley NY; Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border; Conneaut OH to Ripley NY beyond 5 nm off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued July 21 at 9:05AM EDT until July 21 at 9:15AM EDT by NWS Cleveland OH |
| Expires | 2026-07-21T09:15:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f13246532803f0d42d764a704a7781ffae6a9040.001.1","noaa_urn:oid:2.49.0.1.840.0.77fae8e21ef16024da2cd3b037b5456411b6d55e.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 43/100, near Painesville (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.