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 cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...
Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...