What is Heat Index?
A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the 'apparent temperature.'
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Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
An instrument for measuring atmospheric pressure.
Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...