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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A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...
A very cold high pressure that originates over the Arctic Ocean.
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...
Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...