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 blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...