Cirrus clouds, known for their wispy, feathery appearance, are shaped by strong winds high in the atmosphere. These winds act on the ice crystals that make up cirrus clouds, twisting and spreading ...

Cirrus clouds at the level of the jet stream – often about 6 miles (10 kilometers), above the ground – can sometimes move at over 200 miles per hour (320 kilometers per hour).

23 November 2023 Huge California wildfires seeded cirrus clouds half a world away Smoke from record-breaking fires in 2020 travelled all the way to Cyprus, where it helped to trigger cloud formation.