Altocumulus

This is a photograph of altocumulus clouds. Click on image for full size version (40K JPG) Courtesy of UCAR Digital Image Library

Altocumulus clouds are part of the Middle Cloud group. They are grayish-white with one part of the cloud darker than the other. Altocumulus clouds usually form in groups.

Altocumulus clouds are about as wide as your thumb when you hold up your hand at arm's length to look at the cloud.

If you see altocumulus clouds on a warm sticky morning, then expect thunderstorms by late afternoon.

This is a photograph of altocumulus clouds. Click on image for full size version (40K JPG) Courtesy of UCAR Digital Image Library

Altocumulus clouds are part of the Middle Cloud group (2000-7000m up). They are grayish-white with one part of the cloud darker than the other. Altocumulus clouds usually form in groups and are about 1 km thick.

Altocumulus clouds are about as wide as your thumb when you hold up your hand at arm's length to look at the cloud.

If you see altocumulus clouds on a warm humid morning, then expect thunderstorms by late afternoon.

This is a photograph of altocumulus clouds. Click on image for full size version (40K JPG) Courtesy of UCAR Digital Image Library

Altocumulus clouds (weather symbol - Ac), are made primarily of liquid water and have a thickness of 1 km. They are part of the Middle Cloud group (2000-7000m up). They are grayish-white with one part of the cloud darker than the other. Altocumulus clouds usually form in groups.

You can distinguish an altocumulus cloud from a stratocumulus cloud by pointing your hand toward the cloud. If the cloud is about the size of your thumbnail, then it is altocumulus.

Altocumulus clouds in view on a warm humid morning indicate thunderstorms by late afternoon.