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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Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...
The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...
A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...
The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.