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 large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...
A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...
A storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...