Go to Met Office homepage Weather warning issued - go to UK severe weather warnings

CH1 Ci in filaments/hooks not invading the sky

The white, delicate, hair-like cirrus clouds of CH 1 occur most often in nearly straight or somewhat curved filaments.

Ci
Cloud height about 30,000 ft © R.D. Whyman

Gallery Next example

 

Related pages: Cloud classification | CL guide | CM guide | CH guide | Cloud index