NWS Jacksonville FLMA.W 0226September 11, 2026
Special Marine Warning: Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM and Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM
The National Weather Service office in Jacksonville issued a special marine warning for Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM and Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM, which was in force until 6:30 p.m. local time on September 11. It was the 226th special marine warning the NWS office in Jacksonville issued in 2026.
ExpiredWarning
In force for 55 minutes; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Jacksonville FL
- Area
- Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM and Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM
- Level
- Warning
- Issued
- 5:35 p.m. EDT, September 11, 2026
- Expires
- 6:30 p.m. EDT, September 11, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KJAX MA.W 0226
- Official source
- National Weather Service: the notice at its source
NWS notices, September 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
SMWJAX The National Weather Service in Jacksonville has issued a * Special Marine Warning for... Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM... Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM... * Until 630 PM EDT. * At 534 PM EDT, strong thunderstorms were located along a line extending from 16 nm west of Altamaha Sound to 19 nm west of Saint Augustine, moving east at 20 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... High Point, Nassau Sound Approach Buoy 6a, Buoy F, Vilano Beach, St Simons Island Village, Palm Valley, St. Simons Island, Talbot Island, Saint Andrews Sound, Saint Johns Lighted Buoy, Dungeness, St Simons Sound Buoy 9, Atlantic Beach, Mayport, Amelia City, Buoy Cdh, Jekyll Island, South Ponte Vedra Beach, Jacksonville Beach, and Buoy Kby.
What the agency told people to do
Move to safe harbor until hazardous weather passes. If your vessel is caught offshore, immediately secure for heavy weather. Ensure all crew members are wearing USCG approved Type I life jackets and nonessential crew are below decks. Deploy jack lines and harnesses if available. Check life saving equipment, including batteries on handheld radios, for readiness.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.