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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The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
The branch of science dealing with the laws of motion of air or other gases.
The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...
A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.