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.
3 other detections within 20 km in the last 24 hours, the nearest 5 km from here.
This alert expired on 15 September 2026 at 21:00 UTC. It is kept here as a record.
It is the 14th strongest of the 19 detections recorded within 20 km of this point since 23 May 2026. The last comparable one was on 13 August 2026.
What the source measured
NOAA reported: Special Marine Warning issued September 15 at 4:35PM EDT until September 15 at 5:00PM EDT by NWS Miami FL
Urban PEI: 17,690 within a heuristic 50 km radius; not unique people.
Nearby, since 23 May 2026
- June 12, 2026 · score 34 · 6.3 km
- May 23, 2026 · score 34 · 8.5 km
- July 10, 2026 · score 34 · 9.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 v5. 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 | 0.81/1 |
| Coordinates | 25.7563, -81.3450 |
| Nearest City | Marco Island (43 km) |
| Urban exposure index (PEI) | 17.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-15T20:35:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.4d843605613ff4ff665e486c248f114353e26a07.001.1 |
Physical priority index · v5. 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: 2026-09-15T20:35:00.000Z.
First archived: 2026-09-15T20:37:40.053Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
2026-09-15T20:48:48.180Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
2026-09-15T20:43:19.515Z · data_change
Index 28 → 28; severity medium → medium; version 5 → 5.
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM; Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM |
| Headline | Special Marine Warning issued September 15 at 4:35PM EDT until September 15 at 5:00PM EDT by NWS Miami FL |
| Expires | 2026-09-15T17:00:00-04:00 |
| SenderName | NWS Miami FL |
| HasExactCoords | true |
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.
Review the area, threshold and delivery channel in your account.
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