Right now
The most recent data we hold from NOAA arrived 2 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 17 March 2026 at 05:35 UTC. It is kept here as a record.
It is one of only 3 we have recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 17 at 1:25AM EDT until March 17 at 1:30AM EDT by NWS Key West FL
An estimated 25,755 people live within 50 km of this point.
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 83 % 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) | 34 / 100 |
| Our confidence | 83% |
| Coordinates | 24.1360, -81.7680 |
| Nearest City | Key West (47 km) |
| Population Exposed | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T05:25:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.c48a18dec27c98f76f9670d83f6b5cd4d5ae1592.001.1 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM; Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal 20 to 60 NM out |
| Headline | Special Marine Warning issued March 17 at 1:25AM EDT until March 17 at 1:30AM EDT by NWS Key West FL |
| Expires | 2026-03-17T01:35:00-04:00 |
| SenderName | NWS Key West FL |
| HasExactCoords | true |
| Iem TypeSummary | M |
| Iem Magnitude | 43 |
| Iem Unit | MPH |
| Iem City | 8 SSE Sugarloaf Key |
| Iem County | GMZ044 |
| Iem State | FL |
| Iem Wfo | KEY |
| Iem Remark | A WNW wind gust of 37 knots, or 43 mph, was recorded by the XASL WeatherFlow mesonet site at American Shoal Light. |
| MergedSources | [{"id":"iem_M_24.530_-81.520_1773719040000","source":"iem","severity":"low","severityValue":25,"timestamp":1773719040000,"latitude":24.53,"longitude":-81.52}] |
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 34/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.