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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A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
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.
A type of cloud consisting mostly of small particles such as ice particles.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...
A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...