This alert expired on 23 June 2026 at 23:45 UTC. It is kept here as a record.
No stronger detection stands among the 7 recorded within 20 km of this point since 16 March 2026 — 6 others scored the same. The last comparable one was on 21 June 2026. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued June 23 at 7:15PM EDT until June 23 at 7:45PM EDT by NWS Jacksonville FL
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 58 % 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 | 58% |
| Coordinates | 29.6716, -80.4893 |
| Nearest City | Ormond Beach (70 km) |
| Impact Tier | minor |
| Timestamp | 2026-06-23T23:15:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.b68bf3ba9eca955223109fa6c86d24f6 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Waters from Altamaha Sound GA to Fernandina 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; Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM; 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 and 1 more areas |
| Headline | Special Marine Warning issued June 23 at 7:15PM EDT until June 23 at 7:45PM EDT by NWS Jacksonville FL |
| Expires | 2026-06-23T19:45:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 4 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.b68bf3ba9eca955223109fa6c86d24f6815fb8b3.001.1","noaa_urn:oid:2.49.0.1.840.0.1c0134401571cd0f0b9e964c21010fc1d1d9a6e9.001.1","noaa_urn:oid:2.49.0.1.840.0.202e6d6c52bb4727b19eb7780318abd3513b0c14.001.1","noaa_urn:oid:2.49.0.1.840.0.5ab2afb98ad589dd64f539e7d846f331ad040057.001.1"] |
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.