Severe Flood ● Monitoring
Flood Warning issued October 11 at 9:25AM EDT until October 14 at 2:00AM EDT by NWS Jacksonville FL, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
...The National Weather Service in Jacksonville has issued a Flood
Warning for the following rivers in Florida...Georgia...
St Mary's River At Macclenny affecting Charlton, Nassau and Baker
Counties.
Additional information is available at
https://water.weather.gov/wfo/JAX
The next statement will be issued Monday morning at 930 AM EDT.
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...St Mary's River at Macclenny.
* WHEN...From this morning to late Tuesday night.
* IMPACTS...At 12.0 feet, Minor flooding of low lying areas and
timber lands including some properties along St. Mary's River Bluff
Road and the Cypress Landing Resort on the Georgia side. At 14.0
feet, Flooding of bottomlands along the river and some lower access
roads including the lower half of St. Mary's River Bluff Road which
cuts off 15 to 20 homes on the Georgia side.
* ADDITIONAL DETAILS...
- At 8:45 AM EDT Sunday the stage was 12.1 feet.
- Forecast...The river is expected to rise to a crest of 12.2 feet
this afternoon. It will then fall below flood stage Tuesday
evening.
- Flood stage is 12.0 feet.
- http://www.weather.gov/safety/flood
Measurements
| Coordinates | 30.4471, -82.1057 |
|---|---|
| Region | Baker, FL; Nassau, FL; Charlton, GA |
| Location Precision | polygon |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Expected |
| Cap Certainty | Likely |
| Cap Expires | 2026-10-12T09:30:00-04:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportAlso reported by: NWS
This event as JSON · API and licence
Source updated 8 days ago (Oct 11, 2026 13:25 UTC) · we last heard from WMO Alert Hub (national weather services) 19 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
Satellite view, before and after
The latest clear Sentinel-2 pass before this event and the earliest one after it.
19 Sep 2026, 22 days before this event. 24.5% cloud across the tile.
14 Oct 2026, 3 days after this event. 1.1% cloud across the tile.
The white ring marks where the event was reported.
Each image is a preview of a whole Sentinel-2 tile — an area of roughly 110 by 110 km, where one pixel is about 320 metres — not a close-up of the event, which may be a small part of it. "Clear" means under 30% cloud across the entire tile, so the exact place that matters can still be hidden. These are pictures for context, not an assessment of damage.
Contains modified Copernicus Sentinel data 2026, found through the Earth Search catalogue (Element 84) and served from the AWS Open Data Sentinel-2 archive.
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Flood preparation, evacuation decisions, and the dangers of driving or walking through floodwater.
Open Flood Safety Guide →Earlier flood events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.