Fog occurs when a whole layer of air is cooled below its dew point and moisture is condensed around tiny particles of dust. Depending on the temperature, it may be in the form of droplets of water, or ice atmosphere. Fogs are usually the result of air cooling by atmosphere. Fogs are usually the result of air cooling by contact with a cold surface atmosphere. Fogs are usually the result of air cooling by contact with a cold surface.contact with a cold surface crystals, both of which are heavier than air, but they are kept suspended by the slightest movements of the atmosphere. Fogs are usually the result of air cooling by contact with a cold surface.

Rainfall that is associated with the passage of a front over a location.

The boundary zones between two air masses.