What Is Cirrostratus?
A thin, milky veil of high ice cloud covering the sky. It often makes a ring, or halo, around the sun or moon and can signal rain within a day or so. In technical terms: A high-etage cloud genus forming a transparent whitish fibrous or smooth veil of ice crystals that produces halo phenomena such as the 22 degree halo; often thickens ahead of a warm front.
Also called: Cs
Cirrostratus In Plain English
A thin, milky veil of high ice cloud covering the sky. It often makes a ring, or halo, around the sun or moon and can signal rain within a day or so.
The Technical Definition
A high-etage cloud genus forming a transparent whitish fibrous or smooth veil of ice crystals that produces halo phenomena such as the 22 degree halo; often thickens ahead of a warm front.
