Cirrus uncinus Posted on July 20, 2017July 20, 2017 by simonyronen Cirrus uncinus clouds in the picture that I took today while working on Li. Name of the cloud refers to hooks in Latin. In Finnish our term of them refers skid of the sledge – jalaspilvi. Share the post "Cirrus uncinus" FacebookTwitterPinterestLinkedInE-mail Posted in Baltic Sea.