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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The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
A type of cloud consisting mostly of small particles such as ice particles.
A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...