Dense Fog Advisory issued December 18 at 1:05AM EST until December 18 at 10:00AM EST by NWS Jacksonville FL

* WHAT…Dense fog will reduce visibility to 1/4 NM or less.

* WHERE…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.

* WHEN…Until 10 AM EST this morning.

* IMPACTS…Low visibility will make navigation difficult.