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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Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...
Snow that rises to 8 feet or higher.
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...
The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...
A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....