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 rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

A weather front formed when a cold front overtakes a warm front, lifting the warm air off the ground and resulting in a mix...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...