Right now
The most recent data we hold from NOAA arrived 10 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 2 October 2026 at 18:45 UTC. It is kept here as a record.
It is one of only 3 we have recorded within 20 km of this point since 8 March 2026. The last comparable one was on 23 September 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued October 2 at 1:41PM EDT until October 2 at 2:45PM EDT by NWS Jacksonville FL
Urban PEI: 73,676 within a heuristic 50 km radius; not unique people.
Nearby, since 8 March 2026
- September 11, 2026 · 0.5 km
- July 11, 2026 · 5.7 km
- August 4, 2026 · 5.9 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 32 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) | 32 / 100 |
| Legacy data-support index | 0.81/1 |
| Coordinates | 30.7111, -81.3780 |
| Nearest City | St. Marys (17 km) |
| Urban exposure index (PEI) | 73.7K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-10-02T17:41:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.f28d8d7e563d8515d439dc49a2894bee6844e970.001.1 |
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: 2026-10-02T17:41:00.000Z.
First archived: 2026-10-02T17:45:50.083Z. 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 |
| MessageId | urn:oid:2.49.0.1.840.0.f28d8d7e563d8515d439dc49a2894bee6844e970.001.1 |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM; Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM; Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM |
| Headline | Special Marine Warning issued October 2 at 1:41PM EDT until October 2 at 2:45PM EDT by NWS Jacksonville FL |
| Expires | 2026-10-02T14:45:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.f28d8d7e563d8515d439dc49a2894bee6844e970.001.1","noaa_urn:oid:2.49.0.1.840.0.eead8ae0b845642e801a891cb300d77f8dae5f34.001.1"] |
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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