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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Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...
Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.