Dense Fog Advisory issued December 28 at 12:13AM EST until December 28 at 7:00AM EST by NWS Charleston SC

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

* WHERE…South Santee River SC to Savannah GA out 20 NM.

* WHEN…Until 7 AM EST this morning.

* IMPACTS…Low visibility will make navigation difficult.