![]() ![]() ![]() īy definition, fog reduces visibility to less than 1 km (0.62 mi), whereas mist causes lesser impairment of visibility. ![]() The term fog is typically distinguished from the more generic term cloud in that fog is low-lying, and the moisture in the fog is often generated locally (such as from a nearby body of water, like a lake or the ocean, or from nearby moist ground or marshes). Fog is similar to, but less transparent than, mist.ĭefinition A foggy Aura River in Turku, Finland Sea fog, which shows up near bodies of saline water, is formed as water vapor condenses on bits of salt. During condensation, molecules of water vapor combine to make tiny liquid water droplets that hang in the air. In turn, fog affects many human activities, such as shipping, travel, and warfare.įog appears when water vapor (water in its gaseous form) condenses. 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. Fog dissipating over Koblenz, Germanyįog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. View from Blassenstein mountain near Scheibbs ( Lower Austria) to the west, with fog over Erlauf valley and Danube A massive fog bank over Twentynine Palms, California, covers the entire city as it begins to rise and join the clouds above it. For other uses, see Fog (disambiguation) and Foggy (disambiguation). ![]()
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