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 very cold high pressure that originates over the Arctic Ocean.
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.