This alert expired on 16 March 2026 at 19:00 UTC. It is kept here as a record.
It is the 8th strongest of the 21 detections recorded within 20 km of this point since 15 March 2026. The last comparable one was on 15 March 2026. One more was recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued March 16 at 2:09PM EDT until March 16 at 3:00PM EDT by NWS Jacksonville FL
An estimated 82,893 people live within 50 km of this point.
Nearby, since 15 March 2026
- June 23, 2026 · score 39 · 7.3 km
- July 13, 2026 · score 39 · 10.8 km
- June 21, 2026 · score 43 · 11.5 km
How we know
One source: NOAA. Not yet confirmed by a second, independent source.
Our own score for this event is 39 out of 100, at 77 % 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) | 39 / 100 |
| Our confidence | 77% |
| Coordinates | 29.8370, -80.9111 |
| Nearest City | Palm Coast (41 km) |
| Population Exposed | 82.9K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-03-16T18:09:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.ebfa47444dc960945c1cf9a927cab0e9 |
Score Breakdown
Technical Details
| Event | Special Marine Warning |
| Urgency | Immediate |
| Certainty | Likely |
| AreaDesc | Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM; Coastal waters from St. Augustine to Flagler Beach FL out 20 NM; Flagler Beach to Volusia-Brevard County Line 0-20 nm; Volusia-Brevard County Line to Sebastian Inlet 0-20 nm; Flagler Beach to Volusia-Brevard County Line 20-60 nm; Volusia-Brevard County Line to Sebastian Inlet 20-60 nm and 3 more areas |
| Headline | Special Marine Warning issued March 16 at 2:09PM EDT until March 16 at 3:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-03-16T15:00:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 6 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ebfa47444dc960945c1cf9a927cab0e90d4a227e.001.1","noaa_urn:oid:2.49.0.1.840.0.a4a7fe1aab29c52b2ac3c70d6aa74b04d513d94a.001.1","noaa_urn:oid:2.49.0.1.840.0.2d8c56d21b86803136d0ec25a9a675fb17a42f15.001.1","noaa_urn:oid:2.49.0.1.840.0.c0e20fbd1edec067b7784c946d6ab97a0c79764e.001.1","noaa_urn:oid:2.49.0.1.840.0.80badf546f5a4c0b66e6a55751e98c6f9782a6fa.001.1","noaa_urn:oid:2.49.0.1.840.0.329cdc2da1549db56e536f8b74b58e89d702ee90.001.1"] |
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 39/100 (United States), based on data from noaa. Source: Calamity.live, a platform aggregating real-time data from 185 scientific monitoring sources.