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

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

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

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A very cold high pressure that originates over the Arctic Ocean.