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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The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...
Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...
Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...
An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...