Related Words

Advection Fog: Fog that develops when warm moist air moves over a colder surface, cooling that air to below its dew point.

Steam Fog: A type of advection fog that is produced by evaporation when cool air passes over a warm wet surface and the fog rises, giving the appearance of steam. Also called sea smoke when it occurs o . . . View Full Definition

Sea Fog: A type of advection fog which forms in warm moist air cooled to saturation as the air moves across cold water.

Negative Vorticity Advection: The advection of lower values of vorticity into an area.

Ice Fog: Fog that is composed of minute ice particles. It occurs in very low temperatures under clear, calm conditions in the polar latitudes and may produce a halo around the sun or moon.

Ground Fog: Fog created when radiational cooling at the earth's surface lowers the temperature of the air near the ground to or below its initial dew point. Primarily takes place at night or early morning.

Freezing Fog: Used to describe the phenomena when fog is present and the air temperature is below 0°C. It is reported as 'FZFG' in an observation and on the METAR.

Positive Vorticity Advection: The advection of higher values of vorticity into an area. It is also known as cyclonic vorticity.

Radiation Fog: Fog that is created when radiational cooling at the earth's surface lowers the temperature of the air near the ground to or below its dew point. Formation is best when there is a shallow sur . . . View Full Definition

Tule Fog: Ground fog in the central valley of California and the leading cause of weather-related casualties in that state. It forms at night and in the early morning when the ground cools, lowering t . . . View Full Definition