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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Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...
A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...
Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...
A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
Coastal flooding occurs when water from the ocean, sea, or large lakes inundates land areas along the coast, usually due...