NWS Forecast Office Jacksonville, FL

Dense Fog Advisory in effect Tonight into Early Monday through 9AM. Slow down and turn on your low beam headlights while allowing extra distance between vehicles. Marine Dense Fog Advisory in effect through tonight for nearshore SE GA and NE FL waters north of St Augustine. Use caution if navigating waters. Safe Boating Tip: Get familiar with horn & bell sounds you should produce to warn others around you when in dense fog.