13,000 to 39,000 feet above sea level.
Cirrus clouds are at a high altitude.
High, wispy clouds are generally categorized as cirrus clouds.
The most usual form of high-level clouds are thin and often wispy CIRRUS clouds. Cirrus clouds are usually found at heights greater than 20,000 feet. Cirrus clouds are composed of ice crystals that originate from the freezing of supercooled water droplets.
Cirrus clouds.
cirrus clouds
Very high wispy clouds are called cirrus clouds. They form at high altitudes and are composed of ice crystals. Cirrus clouds are often indicators of fair weather but can also signal approaching storms.
cirrus
Noctilucent clouds are the highest and least understood. Cirrus and cirrostratus are the high-type clouds. Any high cloud will have the prefix "cirr".
cirrus
Cirrus, cirrostratus, and cirrocumulus are all types of high-level clouds. Cirrus clouds are wispy, thin clouds found at high altitudes. Cirrostratus clouds are thin, sheet-like clouds that cover the sky. Cirrocumulus clouds are fluffy clouds found in a thin layer at high altitudes.
Feathery high clouds are cirrus clouds, which are the highest clouds in the atmosphere and typically have a wispy, thin appearance. They are composed mostly of ice crystals and can indicate fair weather or the approach of a warm front.
Cirrus and cumulus are types of clouds. Cirrus clouds are thin, wispy clouds high in the sky, while cumulus clouds are fluffy, white clouds with a flat base that are found at lower altitudes.