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 decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...
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 instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...