What is Relative Humidity?
The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.
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A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
Snow that rises to 8 feet or higher.
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
A very cold high pressure that originates over the Arctic Ocean.
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
A type of cloud consisting mostly of small particles such as ice particles.
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.