Images. Cirrus clouds are thin, wispy clouds high in the sky that can be hard to see with the unaided eye. They typically form at an altitude of 6,000 meters (20,000 feet) or higher, where the air ...

Stratus clouds typically form in the lower atmosphere, while cirrus clouds develop at higher altitudes. Posted 8:47 p.m. Apr 24 — Updated 8:47 p.m. Apr 24 Question: What is the difference ...

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