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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Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...
Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...
A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...
The amount of water vapor present in the air, which can affect comfort levels and weather conditions.
A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...