What Is Altostratus?
A gray or bluish sheet of mid-level cloud that covers the sky. The sun looks like it is behind frosted glass, with no halo. In technical terms: A middle-etage cloud genus forming a uniform or striated gray sheet of ice and water that partly or totally covers the sky; thin enough in parts to reveal the sun as through ground glass, without halo phenomena.
Also called: As
Altostratus In Plain English
A gray or bluish sheet of mid-level cloud that covers the sky. The sun looks like it is behind frosted glass, with no halo.
The Technical Definition
A middle-etage cloud genus forming a uniform or striated gray sheet of ice and water that partly or totally covers the sky; thin enough in parts to reveal the sun as through ground glass, without halo phenomena. Frequently thickens ahead of a warm front into nimbostratus.
