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 small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...
Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...
A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...
The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.
A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...
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Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...
Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...