This alert expired on 5 September 2026 at 07:30 UTC. It is kept here as a record.
No stronger detection stands among the 8 recorded within 20 km of this point since 3 June 2026 — 7 others scored the same. The last comparable one was on 6 August 2026.
What the source measured
NOAA reported: Special Marine Warning issued September 5 at 2:58AM EDT until September 5 at 3:30AM EDT by NWS Key West FL
Nearby, since 3 June 2026
- August 6, 2026 · score 16 · 2.0 km
- June 3, 2026 · score 16 · 11.6 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 16 out of 100, at 61 % 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) | 16 / 100 |
| Our confidence | 61% |
| Coordinates | 23.9017, -83.1483 |
| Nearest City | Mariel (109 km) |
| Impact Tier | minor |
| Timestamp | 2026-09-05T06:58:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.913c04fd2f78e189c29445dc1b7892f5b37180f9.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Straits of Florida from Halfmoon Shoal to 20 NM west of Dry Tortugas 20 to 60 NM out |
| Headline | Special Marine Warning issued September 5 at 2:58AM EDT until September 5 at 3:30AM EDT by NWS Key West FL |
| Expires | 2026-09-05T03:30:00-04:00 |
| SenderName | NWS Key West FL |
| 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 16/100 (Cuba), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.