At what altitude range do cirrus clouds typically exist?

Cirrus clouds are known for their high altitude, typically forming around 6,000 meters (approximately 20,000 feet) and above. They are composed of ice crystals due to the cold temperatures at such elevations. These clouds are thin and wispy in appearance, which is why they can be observed at such heights. Their presence often indicates that there may be a change in weather or a warm front approaching, as they usually precede storm systems.

This altitude range distinguishes cirrus clouds from other cloud types that form at lower levels, such as stratus or cumulus clouds, which are generally found below 6,000 meters. Therefore, understanding the typical altitude range of cirrus clouds is crucial for weather prediction and for anyone involved in meteorological studies, including those preparing for the Maine Guide License Practice Exam.