842 FZUS72 KJAX 031218 MWSJAX Marine Weather Statement National Weather Service Jacksonville FL 718 AM EST Tue Mar 3 2026 AMZ454-031500- Coastal waters from St. Augustine to Flagler Beach FL out 20 NM- 718 AM EST Tue Mar 3 2026 Dense sea fog has pushed southward along the immediate near shore waters adjacent to St. Johns County early this morning, mainly north of Marineland. Marine interests should exercise caution through late this morning due to this dense sea fog, especially within about 10 nm of the shoreline. Visibilities will be restricted to less than 1 nm at times. Navigation may be hazardous in restricted waterways and channels. $$