Wednesday 26th November 2025

An Altocumulus castellanus cloud batted its lashes at Ernesto Astiazaran (Member 59,557) as he gazed at this cyclops of the sky over San Carlos Bay, Sonora, Mexico. The luscious lashes are known as crepuscular rays. They were styled by the turretlike cloud tops, characteristic of the castellanus species, casting their shadows onto the atmospheric haze. A scar of aircraft condensation trail above stretched across the sky’s brow.




Each day, we send a Cloud-a-Day like this to our subscribing members.

Join the Society

Become a member of the Cloud Appreciation Society.

Join Now

Gift a Membership

Give a year of Cloud Appreciation Society membership to a friend or loved one.

Gift Membership