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 type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.
An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
A cloud of irregular appearance, composed of irregular cloud fragments.
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...
A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...
Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...