Right now
The most recent data we hold from NOAA arrived 1 minute 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 05:15 UTC. It is kept here as a record.
No stronger detection stands among the 24 recorded within 20 km of this point since 17 March 2026 — 13 others scored the same. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 17 at 1:05AM EDT until March 17 at 1:15AM EDT by NWS Key West FL
Urban PEI: 25,755 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- July 26, 2026 · score 34 · 18.8 km
- August 6, 2026 · score 34 · 19.3 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
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 |
| Legacy data-support index | 0.88/1 |
| Coordinates | 24.4937, -81.4068 |
| Nearest City | Key West (38 km) |
| Urban exposure index (PEI) | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-17T05:05:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.c63e95f8b0262f6884a11843f3a19db5 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-03-17T05:05:00.000Z.
First archived: 2026-03-17T05:12:08.340Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
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 West End of Seven Mile Bridge to Halfmoon Shoal out to 5 Fathoms; Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef; Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef; Straits of Florida from Craig Key to west end of Seven Mile Bridge out 20 NM; Straits of Florida from west end of Seven Mile Bridge to south of Halfmoon Shoal out 20 NM; 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; 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 1:05AM EDT until March 17 at 1:15AM EDT by NWS Key West FL |
| Expires | 2026-03-17T01:15:00-04:00 |
| SenderName | NWS Key West FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.c63e95f8b0262f6884a11843f3a19db5ced4b8c2.001.1","noaa_urn:oid:2.49.0.1.840.0.29e1de673a9d502412765dd9e4aa24427420508b.001.1"] |
| Iem TypeSummary | M |
| Iem Magnitude | 40 |
| Iem Unit | MPH |
| Iem City | 3 WNW Layton |
| Iem County | GMZ032 |
| Iem State | FL |
| Iem Wfo | KEY |
| Iem Remark | A SW wind gust of 35 knots, or 40 mph, was recorded by the LONF1 C-MAN station north of Long Key. |
| MergedSources | [{"id":"iem_M_24.530_-81.520_1773719040000","source":"iem","severity":"low","severityValue":25,"timestamp":1773719040000,"latitude":24.53,"longitude":-81.52},{"id":"iem_M_24.840_-80.860_1773714000000","source":"iem","severity":"low","severityValue":25,"timestamp":1773714000000,"latitude":24.84,"longitude":-80.86}] |
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.
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