Advection fog

Advection Fog: The result of the horizontal movement of moist and warm air, which is transported over a colder surface, resulting in condensation forming a fog. This type of fog is often seen when warm air over water bodies moves over colder land areas, causing the air to cool and the moisture to condense. Advection fog can also form when warm and humid air masses move over existing areas of chillier air. This dense fog can persist for many hours or even days, causing visibility issues for drivers, ships, and aircraft.