This alert expired on 7 August 2026 at 03:30 UTC. It is kept here as a record.
No stronger detection stands among the 50 recorded within 20 km of this point since 17 March 2026 — 27 others scored the same. Another comparable one was recorded here earlier the same day. 19 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued August 6 at 11:20PM EDT until August 6 at 11:30PM EDT by NWS Key West FL
An estimated 25,755 people live within 50 km of this point.
Nearby, since 17 March 2026
- July 24, 2026 · score 34 · 6.4 km
- July 27, 2026 · score 34 · 9.7 km
- June 5, 2026 · score 34 · 10.7 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 86 % 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 | 86% |
| Coordinates | 24.6390, -81.7010 |
| Nearest City | Key West (12 km) |
| Population Exposed | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-08-07T03:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.b3b785278f60d35f628d466e7a8574b1015f6949.001.1 |
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 |
| Headline | Special Marine Warning issued August 6 at 11:20PM EDT until August 6 at 11:30PM EDT by NWS Key West FL |
| Expires | 2026-08-06T23:30:00-04:00 |
| SenderName | NWS Key West FL |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 39 |
| Iem Unit | MPH |
| Iem City | Sand Key Light |
| Iem County | GMZ044 |
| Iem State | FL |
| Iem Wfo | KEY |
| Iem Remark | Sand Key Light observed a marine thunderstorm wind gust to 39 mph or 34 knots out of the northeast to east at 953 pm EDT from storms moving west to southwest. |
| MergedSources | [{"id":"iem_M_24.460_-81.880_1786067580000","source":"iem","severity":"low","severityValue":25,"timestamp":1786067580000,"latitude":24.46,"longitude":-81.88}] |
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, near Key West (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 187 scientific monitoring sources.