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 rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....