This alert expired on 20 July 2026 at 06:45 UTC. It is kept here as a record.
No stronger detection stands among the 26 recorded within 20 km of this point since 17 March 2026 — 15 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 20 at 1:59AM EDT until July 20 at 2:45AM EDT by NWS Key West FL
An estimated 25,755 people live within 50 km of this point.
Nearby, since 17 March 2026
- August 6, 2026 · score 34 · 7.3 km
- July 26, 2026 · score 34 · 15.9 km
- July 11, 2026 · score 34 · 16.9 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 81 % 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) | 34 / 100 |
| Our confidence | 81% |
| Coordinates | 24.7024, -81.4243 |
| Nearest City | Key West (39 km) |
| Population Exposed | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-20T05:59:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.4359fcf07732e01701f08f45f6051d4fbc771b01.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Bayside and Gulfside from Craig Key to West End of Seven Mile Bridge; 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 July 20 at 1:59AM EDT until July 20 at 2:45AM EDT by NWS Key West FL |
| Expires | 2026-07-20T02:45:00-04:00 |
| 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.
Want to know when something happens near Key West?
Calamity.live data shows a weather event with CalamityScore 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.