Fog is a visible aerosol consisting of tiny water droplets or ice crystals held in the air near the Earth 's surface. [1][2] Fog can be considered a type of low-lying cloud usually resembling stratus and is heavily influenced by nearby bodies of water, topography, and wind conditions. In turn, fog affects many human activities, such as shipping, travel, and warfare. Fog appears when water ...
fog, cloud of small water droplets that is near ground level and sufficiently dense to reduce horizontal visibility to less than 1,000 metres (3,281 feet). The word fog also may refer to clouds of smoke particles, ice particles, or mixtures of these components. Under similar conditions, but with visibility greater than 1,000 metres, the phenomenon is termed a mist or haze, depending on whether ...
The famous Carl Sandburg poem, Fog, reminds us that its mere presence has conjured up images of mystery for eons. But who knew that there were so many different types of fog, each forming under different conditions? Read on, and the next time you encounter fog, you’ll know how it formed and how to identify it! Radiation Fog Radiation fog needs clear skies and calm winds to form. This type ...
Radiation fog varies in depth from 3 feet to about 1,000 feet and usually remains stationary. This type of fog can reduce visibility to near zero at times and make driving very hazardous. Valley fog is a type of radiation fog.
Learn about fog in meteorology. Discover the definition, how and why fog forms, the different types, and how it differs from other phenomena.