Right now
The most recent data we hold from NOAA arrived 6 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 20 May 2026 at 20:45 UTC. It is kept here as a record.
It is the 3rd strongest of the 73 detections recorded within 20 km of this point since 17 March 2026. The last comparable one was on 17 March 2026.
What the source measured
NOAA reported: Special Marine Warning issued May 20 at 4:00PM EDT until May 20 at 4:45PM EDT by NWS Upton NY
An estimated 13,038,592 people live within 50 km of this point.
Nearby, since 17 March 2026
- June 6, 2026 · score 52 · 8.5 km
- May 20, 2026 · score 52 · 9.5 km
- July 21, 2026 · score 52 · 12.2 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 52 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) | 52 / 100 |
| Our confidence | 79% |
| Coordinates | 40.9911, -73.5167 |
| Nearest City | Stamford (7 km) |
| Population Exposed | 13.0M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T20:00:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0ed1b5e8f66d30628b528da1c0926ca1845dc993.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Long Island Sound West of New Haven CT/Port Jefferson NY |
| Headline | Special Marine Warning issued May 20 at 4:00PM EDT until May 20 at 4:45PM EDT by NWS Upton NY |
| Expires | 2026-05-20T16:45:00-04:00 |
| SenderName | NWS Upton 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 Stamford?
Calamity.live data shows a weather event with CalamityScore 52/100, near Stamford (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.