This alert expired on 13 July 2026 at 20:00 UTC. It is kept here as a record.
It is the 2nd strongest of the 6 detections recorded within 20 km of this point since 12 May 2026. The last comparable one was on 23 June 2026.
What the source measured
NOAA reported: Special Marine Warning issued July 13 at 3:14PM EDT until July 13 at 4:00PM EDT by NWS Jacksonville FL
Nearby, since 12 May 2026
- May 12, 2026 · score 34 · 19.3 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 22 out of 100, at 61 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
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) | 22 / 100 |
| Our confidence | 61% |
| Coordinates | 30.0782, -80.6931 |
| Nearest City | Palm Valley (68 km) |
| Impact Tier | minor |
| Timestamp | 2026-07-13T19:14:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.11ee7e37d114969515b3f5931351c9f4 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from St. Augustine to Flagler Beach FL out 20 NM; Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM; Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM; Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM |
| Headline | Special Marine Warning issued July 13 at 3:14PM EDT until July 13 at 4:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-07-13T16:00:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.11ee7e37d114969515b3f5931351c9f47a300e6a.001.1","noaa_urn:oid:2.49.0.1.840.0.389c5ea418d33b47b26fbc305742842d95896399.001.1"] |
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.
Want to know when something happens in this area?
Calamity.live data shows a weather event with CalamityScore 22/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.