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.
Glossary
A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
Snow that rises to 8 feet or higher.
The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
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 trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...
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