This alert expired on 9 May 2026 at 23:30 UTC. It is kept here as a record.
No stronger detection stands among the 34 recorded within 20 km of this point since 16 March 2026 — 12 others scored the same. The last comparable one was on 17 March 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 9 at 6:21PM EDT until May 9 at 7:30PM EDT by NWS Cleveland OH
An estimated 99,475 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 14, 2026 · score 39 · 12.8 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 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) | 39 / 100 |
| Our confidence | 79% |
| Coordinates | 42.3148, -80.0524 |
| Nearest City | Erie (21 km) |
| Population Exposed | 99.5K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T22:21:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.e27b5fe2c50578d603dae8a7f661610a |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | 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; Conneaut OH to Ripley NY; Conneaut OH to Ripley NY beyond 5 nm off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued May 9 at 6:21PM EDT until May 9 at 7:30PM EDT by NWS Cleveland OH |
| Expires | 2026-05-09T19:30:00-04:00 |
| SenderName | NWS Cleveland OH |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["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 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 Erie?
Calamity.live data shows a weather event with CalamityScore 39/100, near Erie (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.