Cirrostratus clouds Cirrostratus clouds are thin, sheetlike high clouds that often cover the entire sky. They are so thin that the sun and moon can be seen through them. Cirrostratus clouds usually come 12-24 hours before a rain or snow storm.
Cirrostratus cloudsCirrostratus clouds are thin,sheetlike high clouds that oftencover the entire sky. They are so thinthat the sun and moon can be seenthrough them. Cirrostratus cloudsusually come 12-24 hours before arain or snow storm.