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 cloud of irregular appearance, composed of irregular cloud fragments.
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...
A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...