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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The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...
A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
A large body of air having similar horizontal temperature and moisture characteristics.
A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...