This alert expired on 30 June 2026 at 19:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 23 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 26 June 2026. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 30 at 2:25PM EDT until June 30 at 3:00PM EDT by NWS Buffalo NY
An estimated 134,405 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 14, 2026 · score 43 · 5.5 km
- May 13, 2026 · score 58 · 6.6 km
- June 18, 2026 · score 34 · 8.5 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 43 out of 100, at 90 % 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 | 90% |
| Coordinates | 43.6118, -76.2164 |
| Nearest City | Oswego (29 km) |
| Population Exposed | 134.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-30T18:25:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.fc0f69faf7d83b1e42ca6f25d878e0cddbf61914.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Sodus Bay to Mexico Bay NY; Mexico Bay NY to the St. Lawrence River; 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 June 30 at 2:25PM EDT until June 30 at 3:00PM EDT by NWS Buffalo NY |
| Expires | 2026-06-30T15:00:00-04:00 |
| SenderName | NWS Buffalo NY |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | UNK |
| Spc Location | Cape Vincent |
| Spc County | Jefferson |
| Spc State | NY |
| Spc Comments | Widespread trees and power lines down in the Cape Vincent area. (BUF) |
| MergedSources | [{"id":"spc_wind_44.24_-76.09_0","source":"spc","severity":"medium","severityValue":45,"timestamp":1782839460000,"latitude":44.24,"longitude":-76.09},{"id":"spc_wind_44.13_-76.34_1","source":"spc","severity":"medium","severityValue":45,"timestamp":1782839520000,"latitude":44.13,"longitude":-76.34}] |
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 43/100, near Oswego (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.