Right now
The most recent data we hold from NOAA arrived 4 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 00:00 UTC. It is kept here as a record.
No stronger detection stands among the 33 recorded within 20 km of this point since 16 March 2026 — 15 others scored the same. Another comparable one was recorded here earlier the same day. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued July 29 at 6:56PM EDT until July 29 at 8:00PM EDT by NWS Jacksonville FL
An estimated 50,612 people live within 50 km of this point.
Nearby, since 16 March 2026
- June 15, 2026 · score 39 · 9.2 km
- August 28, 2026 · score 39 · 12.2 km
- July 12, 2026 · score 39 · 13.2 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 81 % 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 | 81% |
| Coordinates | 30.9298, -81.1895 |
| Nearest City | Brunswick (38 km) |
| Population Exposed | 50.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-29T22:56:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Special Marine Warning_noaa_urn:oid:2.49.0.1.840.0.fa90e6785e5e3867822f92d186724765 |
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 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; Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM and 2 more areas |
| Headline | Special Marine Warning issued July 29 at 6:56PM EDT until July 29 at 8:00PM EDT by NWS Jacksonville FL |
| Expires | 2026-07-29T20:00:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| MergedCount | 5 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.fa90e6785e5e3867822f92d186724765916924a7.001.1","noaa_urn:oid:2.49.0.1.840.0.eaee2b065ea4eb39b0c3bc07da1394f0f6b92737.001.1","noaa_urn:oid:2.49.0.1.840.0.729c941da8a893af58f64ab334c4ea92109afccb.001.1","noaa_urn:oid:2.49.0.1.840.0.370ee5a4069fda06dab30dc85c7385f26d4fbf41.001.1","noaa_urn:oid:2.49.0.1.840.0.dd44703a5e95cdf888684e80b97f77a3f0b6dc5e.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.
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