Right now
The most recent data we hold from NOAA arrived 69 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 13 September 2026 at 00:05 UTC. It is kept here as a record.
It is the 10th strongest of the 24 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued September 12 at 7:55PM EDT until September 12 at 8:00PM EDT by NWS Key West FL
Urban PEI: 25,755 within a heuristic 50 km radius; not unique people.
Nearby, since 16 March 2026
- September 10, 2026 · score 28 · 9.1 km
- September 11, 2026 · score 28 · 9.4 km
- March 16, 2026 · score 34 · 10.6 km
How we know
2 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 28 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) | 28 / 100 |
| Legacy data-support index | 0.86/1 |
| Coordinates | 24.9709, -81.9730 |
| Nearest City | Key West (50 km) |
| Urban exposure index (PEI) | 25.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-12T23:55:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f10b50a8f28cf0dfce49e4b2d80c895845fbf988.001.1 |
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: 2026-09-12T23:55:00.000Z.
First archived: 2026-09-12T23:58:06.368Z. 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 | 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; Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms |
| Headline | Special Marine Warning issued September 12 at 7:55PM EDT until September 12 at 8:00PM EDT by NWS Key West FL |
| Expires | 2026-09-12T20:05:00-04:00 |
| SenderName | NWS Key West FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f10b50a8f28cf0dfce49e4b2d80c895845fbf988.001.1","noaa_urn:oid:2.49.0.1.840.0.ee5775d778ce308bc3603bae9556991419aef9b7.001.1"] |
| 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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