Dark blue cloudy sky

What is Cirrostratus?

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky white, fibrous or vein-like.

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Glossary

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

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 low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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

A tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...