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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

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

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

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

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

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

A large body of air having similar horizontal temperature and moisture characteristics.

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....