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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Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
The branch of science dealing with the laws of motion of air or other gases.
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...