This alert expired on 2 September 2026 at 14:30 UTC. It is kept here as a record.
It is the 7th strongest of the 13 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 2 July 2026.
What the source measured
NOAA reported: Special Marine Warning issued September 2 at 9:28AM EDT until September 2 at 10:30AM EDT by NWS Buffalo NY
An estimated 75,993 people live within 50 km of this point.
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Our confidence | 81% |
| Coordinates | 43.5123, -76.5431 |
| Nearest City | Oswego (6 km) |
| Population Exposed | 76.0K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-02T13:28:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.51c972be79744291a6dac24d5810e02ab544ca12.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Hamlin Beach to Sodus Bay NY; Sodus Bay to Mexico Bay NY; Mexico Bay NY to the St. Lawrence River; Hamlin Beach to Sodus Bay NY beyond 5NM off shoreline to US-Canadian border; Sodus Bay to Mexico Bay NY beyond 5NM off shoreline to US-Canadian border; Mexico Bay NY to the St. Lawrence River beyond 5NM off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued September 2 at 9:28AM EDT until September 2 at 10:30AM EDT by NWS Buffalo NY |
| Expires | 2026-09-02T10:30:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
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 Oswego?
Calamity.live data shows a weather event with CalamityScore 32/100, near Oswego (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.