What type of fog is most commonly formed Inland?

Radiation fog is most commonly formed inland due to specific atmospheric conditions that tend to occur in these areas, particularly during clear nights. When the ground loses heat rapidly after sunset, the temperature of the air close to the ground also decreases. If the temperature drops to the dew point, moisture in the air condenses into tiny water droplets, creating fog. This phenomenon is especially prevalent in areas with calm winds and high humidity, which often occur inland rather than near coastlines where other types of fog, like advection fog, may dominate.

Radiation fog typically forms in low-lying areas and valleys, where cooler air settles and creates an environment conducive to moisture condensation. This is in contrast to other types of fog, such as advection fog, which occurs when warm moist air moves over a cooler surface, or steam fog, which forms when cold air moves over warm water, leading to evaporation and condensation. Upslope fog, meanwhile, is a result of moist air being forced to rise over elevated terrain, which is less common in flat inland regions.