Right now
The most recent data we hold from NOAA arrived 2 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 12 August 2026 at 19:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 39 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 9 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 12 at 1:55PM EDT until August 12 at 3:00PM EDT by NWS Buffalo NY
An estimated 48,821 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 10, 2026 · score 34 · 0.8 km
- August 8, 2026 · score 34 · 8.2 km
- July 1, 2026 · score 34 · 13.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 34 out of 100, at 80 % 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) | 34 / 100 |
| Our confidence | 80% |
| Coordinates | 44.9438, -75.0110 |
| Nearest City | Cornwall (24 km) |
| Population Exposed | 48.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-12T17:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.aa4cb851a36d06d723853522350b1f18684da32b.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | St. Lawrence River from Ogdensburg to St. Regis NY |
| Headline | Special Marine Warning issued August 12 at 1:55PM EDT until August 12 at 3:00PM EDT by NWS Buffalo NY |
| Expires | 2026-08-12T15:00:00-04:00 |
| 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 Cornwall?