Dark blue cloudy sky

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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Glossary

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

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A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

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A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...

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The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...