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.
One other detection within 20 km in the last 24 hours, 14 km from here.
This alert expired on 15 September 2026 at 22:00 UTC. It is kept here as a record.
It is the 12th strongest of the 17 detections recorded within 20 km of this point since 16 March 2026. The last comparable one was on 10 September 2026. 3 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued September 15 at 5:04PM EDT until September 15 at 6:00PM EDT by NWS Tallahassee FL
Nearby, since 16 March 2026
- September 10, 2026 · score 16 · 7.0 km
- September 3, 2026 · score 16 · 11.4 km
- September 15, 2026 · score 16 · 14.1 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
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 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) | 16 / 100 |
| Legacy data-support index | 0.60/1 |
| Coordinates | 29.4764, -83.7345 |
| Nearest City | Tallahassee (119 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-09-15T21:04:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.bef170496bab2e8a680b29f6974dd3a0521d1855.001.1 |
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: 2026-09-15T21:04:00.000Z.
First archived: 2026-09-15T21:10:33.618Z. 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 | Coastal waters from Suwannee River to Keaton Beach out 20 NM; Waters from Suwannee River to Apalachicola FL from 20 to 60 NM |
| Headline | Special Marine Warning issued September 15 at 5:04PM EDT until September 15 at 6:00PM EDT by NWS Tallahassee FL |
| Expires | 2026-09-15T18:00:00-04:00 |
| SenderName | NWS Tallahassee 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.
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