What is Clear?
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility. Clear sky. In meteorology, this term is also used when the cloud cover is less than 1/8 during the day or at the observation hour.
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An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
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A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
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An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
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