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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Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
The amount of water vapor present in the air, which can affect comfort levels and weather conditions.
The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...
The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...