Right now
The most recent data we hold from NOAA arrived 9 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 30 July 2026 at 11:15 UTC. It is kept here as a record.
It is the 2nd strongest of the 50 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 27 July 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 30 at 6:18AM EDT until July 30 at 7:15AM EDT by NWS Jacksonville FL
Urban PEI: 201,376 within a heuristic 50 km radius; not unique people.
Nearby, since 15 March 2026
- July 20, 2026 · score 43 · 9.2 km
- June 18, 2026 · score 43 · 10.4 km
- June 25, 2026 · score 43 · 11.9 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 43 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 v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 43 / 100 |
| Legacy data-support index | 0.91/1 |
| Coordinates | 29.8767, -81.1956 |
| Nearest City | Palm Coast (33 km) |
| Urban exposure index (PEI) | 201.4K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-30T10:18:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.aa0566d992e72e8be1248710e4242e678ff35115.001.1 |
Physical priority index · v1. 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: 2026-07-30T10:18:00.000Z.
First archived: 2026-07-30T11:12:42.983Z. 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 Fernandina Beach to St. Augustine FL out 20 NM; Coastal waters from St. Augustine to Flagler Beach FL out 20 NM |
| Headline | Special Marine Warning issued July 30 at 6:18AM EDT until July 30 at 7:15AM EDT by NWS Jacksonville FL |
| Expires | 2026-07-30T07:15:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| Spc ReportType | wind |
| Spc Speed | 58 |
| Spc Location | Mayport |
| Spc County | Duval |
| Spc State | FL |
| Spc Comments | Naval Station Mayport reported a gust of 50 kt at 645 PM EDT. (JAX) |
| MergedSources | [{"id":"spc_wind_30.38_-81.42_49","source":"spc","severity":"medium","severityValue":45,"timestamp":1785388662458,"latitude":30.38,"longitude":-81.42},{"id":"spc_wind_30.38_-81.41_50","source":"spc","severity":"medium","severityValue":45,"timestamp":1785388662458,"latitude":30.38,"longitude":-81.41}] |
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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