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 measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
A large body of air having similar horizontal temperature and moisture characteristics.
The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...