Cirrus Clouds

Cirrus clouds are high-altitude clouds that are thin, wispy, and often appear feathery. They are formed from ice crystals and are typically found at altitudes above 20,000 feet. These clouds are often associated with fair weather, but they can also indicate the approach of a change in the weather.

Formation of Cirrus Clouds

Cirrus clouds are formed when water vapor freezes into ice crystals at high altitudes. These ice crystals are then carried by upper-level winds, creating the characteristic wispy appearance of cirrus clouds.

Characteristics of Cirrus Clouds

Some key characteristics of cirrus clouds include their thin and wispy appearance, their high-altitude location, and their association with fair weather. They are often seen in the sky as delicate streaks or patches, and their presence can indicate the presence of high-altitude winds.

Study Guide for Cirrus Clouds

1. What are cirrus clouds made of?
2. At what altitudes are cirrus clouds typically found?
3. What do cirrus clouds indicate about the weather?
4. How are cirrus clouds formed?
5. Describe the appearance of cirrus clouds.

By understanding the formation and characteristics of cirrus clouds, you can gain a better understanding of the role they play in the Earth's atmosphere and their significance for weather forecasting.