This alert expired on 10 May 2026 at 00:15 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 17 March 2026 — 9 others scored the same. The last comparable one was on 17 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued May 9 at 7:19PM EDT until May 9 at 8:15PM EDT by NWS Buffalo NY
An estimated 370,832 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 4, 2026 · score 43 · 1.6 km
- July 1, 2026 · score 43 · 2.7 km
- July 3, 2026 · score 43 · 6.1 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 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) | 43 / 100 |
| Our confidence | 79% |
| Coordinates | 43.3811, -77.9592 |
| Nearest City | Gates-North Gates (31 km) |
| Population Exposed | 370.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T23:19:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.c5b71725a429e4272cb74df4dd5c3cad |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Niagara River to Hamlin Beach NY; Hamlin Beach to Sodus Bay NY; Niagara River to Hamlin Beach NY beyond 5NM off shoreline to US-Canadian border; Hamlin Beach to Sodus Bay NY beyond 5NM off shoreline to US-Canadian border; Niagara River to Hamlin Beach NY; Niagara River to Hamlin Beach NY beyond 5NM off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued May 9 at 7:19PM EDT until May 9 at 8:15PM EDT by NWS Buffalo NY |
| Expires | 2026-05-09T20:15:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c5b71725a429e4272cb74df4dd5c3cadbca353a9.001.1","noaa_urn:oid:2.49.0.1.840.0.4480eeb0ea5b1eca0bab4da60c388f432f764c4d.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 in this area?
Calamity.live data shows a weather event with CalamityScore 43/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.