Special Marine Warning: Altamaha Sound to Fernandina Beach Waters
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NWS Jacksonville has issued a Special Marine Warning for coastal waters from Altamaha Sound to St. Augustine until 8:15 PM EDT due to strong thunderstorms with wind gusts of 34 knots or greater.
Read this weather record in 30 seconds
- Record type
- Special Marine Warning
- Affected area
- Coastal waters off Northeast Florida and Southeast Georgia
- Issued
- September 11, 2026
- Issuing authority
- NWS Jacksonville FL
Marine notices apply to named waters or shoreline zones. They may not describe conditions on land, even when the nearest place name is the same.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
A Special Marine Warning has been issued by the National Weather Service Jacksonville FL. The alert is effective from September 11, 2026 at 7:11 PM EDT until September 11, 2026 at 8:15 PM EDT.
Affected Areas
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.
What You Should 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.
Expected Conditions
Strong thunderstorms were located along a line extending from near St Simons Island Village to 18 nm southeast of Jekyll Island to near Guana River State Park, moving northeast at 30 knots. Hazard includes wind gusts 34 knots or greater.
Timeline
The warning is in effect from 7:11 PM EDT to 8:15 PM EDT on September 11, 2026.
Original source: NOAA Official Notice ↗
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