This alert expired on 9 May 2026 at 22:32 UTC. It is kept here as a record.
It is the 12th strongest of the 23 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 9 at 6:22PM EDT until May 9 at 6:30PM EDT by NWS Cleveland OH
An estimated 18,371 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 12, 2026 · score 43 · 4.2 km
- June 11, 2026 · score 37 · 4.6 km
- June 26, 2026 · score 43 · 9.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 79 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 79% |
| Coordinates | 42.0950, -80.7125 |
| Nearest City | Ashtabula (26 km) |
| Population Exposed | 18.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T22:22:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.67f16bdc24382fd49ad979e54a359640 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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; 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; Upper Niagara River and Buffalo Harbor; Ripley to Dunkirk NY; Dunkirk to Buffalo NY; Ripley to Buffalo NY extending from 5NM off shoreline to US-Canadian border; Lower Niagara River and 1 more areas |
| Headline | Special Marine Warning issued May 9 at 6:22PM EDT until May 9 at 6:30PM EDT by NWS Cleveland OH |
| Expires | 2026-05-09T18:32:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.67f16bdc24382fd49ad979e54a359640ddf520fe.001.1","noaa_urn:oid:2.49.0.1.840.0.e27b5fe2c50578d603dae8a7f661610afa9b090e.002.1","noaa_urn:oid:2.49.0.1.840.0.fa63f9f1c1ba05eebfae6f926a30da6cd4ba46f6.001.1","noaa_urn:oid:2.49.0.1.840.0.b508817553bd9ada64e726f194e57184fe16c39c.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 10 February 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 Ashtabula?
Calamity.live data shows a weather event with CalamityScore 34/100, near Ashtabula (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.