Upslope Fog
when moist, stable air is forced up sloping land features
Radiation Fog (<20ft ground fog)
when ground cools rapidly, subsequently cooling the surrounding air to its dew point
Steam Fog
when cold, dry air, moves over warm water
Advection Fog
when warm, moist air moves over a cold surface
Ice Fog
when temperature is much below freezing and water vapor forms directly into ice crystals
Precipitation Fog
when warm rain falls through cool air, and saturates the cool air