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

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

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

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

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 periodic warming of sea surface temperatures in the central and eastern Pacific Ocean, significantly influencing global...

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

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