Clouds Formation

• High (Family A)
High clouds form between 10,000 and 25,000 ft (3,000 and 8,000 m) in the polar regions, 16,500 and 40,000 ft (5,000 and 12,000 m) in the temperate regions and 20,000 and 60,000 ft (6,000 and 18,000 m) in the tropical region. It is the only height range family that includes genera from all three physical categories.
Family A includes:
- Genus Cirrus (Ci): Fibrous wisps of delicate white ice crystal cloud that show up clearly against the blue sky.