What is Relative Humidity?
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
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A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
A very cold high pressure that originates over the Arctic Ocean.
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...