This alert expired on 17 June 2026 at 04:15 UTC. It is kept here as a record.
It is the 7th strongest of the 40 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 14 June 2026. 11 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 16 at 10:39PM EDT until June 17 at 12:15AM EDT by NWS Buffalo NY
An estimated 100,674 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 11, 2026 · score 34 · 8.7 km
- May 16, 2026 · score 43 · 10.8 km
- June 14, 2026 · score 39 · 25.1 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 81 % 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) | 37 / 100 |
| Our confidence | 81% |
| Coordinates | 42.5367, -79.3253 |
| Nearest City | Port Colborne (41 km) |
| Population Exposed | 100.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-06-17T02:39:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.d56200e6001e57b2b9b880df66db23dcc858ef3b.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Ripley to Dunkirk NY; Dunkirk to Buffalo NY; Ripley to Buffalo NY extending from 5NM off shoreline to US-Canadian border |
| Headline | Special Marine Warning issued June 16 at 10:39PM EDT until June 17 at 12:15AM EDT by NWS Buffalo NY |
| Expires | 2026-06-17T00:15:00-04:00 |
| 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 in this area?
Calamity.live data shows a weather event with CalamityScore 37/100 (Canada), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.