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

Snow that rises to 8 feet or higher.

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

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

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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.