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 storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere known as thunder.
Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
The branch of science dealing with the laws of motion of air or other gases.
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...
An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...
A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...