Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is in it.
3 other detections within 20 km in the last 24 hours, the nearest 10 km from here.
This alert expired on 11 September 2026 at 23:15 UTC. It is kept here as a record.
It is the 35th strongest of the 45 detections recorded within 20 km of this point since 8 March 2026. Another comparable one was recorded here earlier the same day. 4 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Special Marine Warning issued September 11 at 6:20PM EDT until September 11 at 7:15PM EDT by NWS Jacksonville FL
An estimated 50,612 people live within 50 km of this point.
Nearby, since 8 March 2026
- June 27, 2026 · score 52 · 5.9 km
- June 22, 2026 · score 39 · 6.0 km
- September 11, 2026 · score 46 · 9.8 km
How we know
Confirmed by 2 independent sources, including NOAA.
Our own score for this event is 32 out of 100, at 86 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 32 / 100 |
| Our confidence | 86% |
| Coordinates | 30.7700, -81.4510 |
| Nearest City | St. Marys (10 km) |
| Population Exposed | 50.6K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-09-11T22:20:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.0db24b9682ea486cd3aadb0977c43fc33e523855.001.1 |
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 Fernandina Beach to St. Augustine FL out 20 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 September 11 at 6:20PM EDT until September 11 at 7:15PM EDT by NWS Jacksonville FL |
| Expires | 2026-09-11T19:15:00-04:00 |
| SenderName | NWS Jacksonville FL |
| HasExactCoords | true |
| Iem TypeSummary | G |
| Iem Magnitude | 42 |
| Iem Unit | MPH |
| Iem City | 3 W Woodbine |
| Iem County | Camden |
| Iem State | GA |
| Iem Wfo | JAX |
| Iem Remark | Mesonet station UGA82 Woodbine measured a wind gust of 42 mph. |
| MergedSources | [{"id":"iem_G_30.960_-81.770_1789163100000","source":"iem","severity":"low","severityValue":25,"timestamp":1789163100000,"latitude":30.96,"longitude":-81.77}] |
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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