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 12 September 2026 at 23:45 UTC. It is kept here as a record.
It is the 16th strongest of the 29 detections recorded within 20 km of this point since 17 March 2026. 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 September 12 at 7:17PM EDT until September 12 at 7:45PM EDT by NWS Key West FL
Nearby, since 17 March 2026
- July 26, 2026 · score 34 · 21.9 km
- August 6, 2026 · score 16 · 24.8 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 16 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 v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 16 / 100 |
| Legacy data-support index | 0.66/1 |
| Coordinates | 24.7488, -81.1222 |
| Nearest City | Key West (70 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-12T23:17:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.1639542fa58f1c014e66396f7976b7684869e972.001.1 |
Physical priority index · v4 (historical). 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: 2026-09-12T23:17:00.000Z.
First archived: 2026-09-12T23:20:31.660Z. 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 | Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound; Hawk Channel from Ocean Reef to Craig Key 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 September 12 at 7:17PM EDT until September 12 at 7:45PM EDT by NWS Key West FL |
| Expires | 2026-09-12T19:45:00-04:00 |
| SenderName | NWS Key West FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.1639542fa58f1c014e66396f7976b7684869e972.001.1","noaa_urn:oid:2.49.0.1.840.0.1023d195985581012ae4cce99dca14a499f03611.001.1"] |
| Iem TypeSummary | W |
| Iem City | 2 WSW Big Torch Key |
| Iem County | GMZ035 |
| Iem State | FL |
| Iem Wfo | KEY |
| Iem Remark | A member of the public reported a likely mature waterspout to the north of Cudjoe Key. The report came in through social media with a photo. The visible portion of the condensation funnel extended fro |
| MergedSources | [{"id":"iem_W_24.720_-81.470_1789239360000","source":"iem","severity":"low","severityValue":25,"timestamp":1789239360000,"latitude":24.72,"longitude":-81.47}] |
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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