What atmospheric condition is required for advection fog to remain?

Advection fog forms when warm, moist air moves horizontally over a cooler surface, causing the air to cool and condense, leading to the formation of fog. For this phenomenon to persist, consistent wind is essential as it helps maintain the movement of the warm, moist air over the cooler surface. The ongoing airflow is what keeps the conditions favorable for advection fog to develop and remain dense. If the wind were to stop, the cooler surface might warm up or the moisture could dissipate, leading to the fog dissipating as well. Thus, consistent wind directly contributes to the continuation of advection fog by ensuring that the necessary temperature and moisture gradients are sustained.