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 scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
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A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.
An instrument for measuring atmospheric pressure.
The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.
Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...