This alert expired on 11 June 2026 at 03:00 UTC. It is kept here as a record.
It is the 10th strongest of the 21 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 9 May 2026.
What the source measured
NOAA reported: Special Marine Warning issued June 10 at 10:01PM EDT until June 10 at 11:00PM EDT by NWS Cleveland OH
An estimated 117,846 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 12, 2026 · score 43 · 2.6 km
- May 9, 2026 · score 34 · 4.6 km
- June 26, 2026 · score 43 · 7.0 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 37 out of 100, at 80 % 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) | 37 / 100 |
| Our confidence | 80% |
| Coordinates | 42.0839, -80.6594 |
| Nearest City | Ashtabula (26 km) |
| Population Exposed | 117.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-11T02:01:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.c602804afa610c90ca2e6e8288c60664 |
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; Avon Point to Willowick OH; Willowick to Geneva-on-the Lake OH; Geneva-on-the-Lake to Conneaut 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 beyond 5 nm off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued June 10 at 10:01PM EDT until June 10 at 11:00PM EDT by NWS Cleveland OH |
| Expires | 2026-06-10T23:00:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c602804afa610c90ca2e6e8288c60664bf8a82d5.001.1","noaa_urn:oid:2.49.0.1.840.0.daef62de1261255c5cc3d56032d1609f70867f6f.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 37/100, near Ashtabula (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.