This alert expired on 30 August 2026 at 00:15 UTC. It is kept here as a record.
It is the 6th strongest of the 9 detections recorded within 20 km of this point since 3 June 2026. The last comparable one was on 8 August 2026.
What the source measured
NOAA reported: Special Marine Warning issued August 29 at 7:17PM EDT until August 29 at 8:15PM EDT by NWS Key West FL
An estimated 25,755 people live within 50 km of this point.
Nearby, since 3 June 2026
- August 8, 2026 · score 34 · 8.4 km
- June 3, 2026 · score 28 · 14.6 km
- August 4, 2026 · score 34 · 15.7 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 28 out of 100, at 80 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Event Data
| Type | Severe weather |
| Severity | medium |
| Calamity Score (ours) | 28 / 100 |
| Our confidence | 80% |
| Coordinates | 24.5380, -82.1820 |
| Nearest City | Key West (41 km) |
| Population Exposed | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-29T23:17:00.000Z |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms; Gulf of America from West End of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms; Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef; Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM |
| Headline | Special Marine Warning issued August 29 at 7:17PM EDT until August 29 at 8:15PM EDT by NWS Key West FL |
| Expires | 2026-08-29T20:15:00-04:00 |
| 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 10 February 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.
Calamity.live data shows a weather event with CalamityScore 28/100, near Key West (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 191 scientific monitoring sources.