Stratocumulus stratiformis occurring in a sheet or layer with detached elements

(Section 2.5.2.7.1)

Below the cloud. Viewed from below, this cloud appears as a sheet or layer, consisting of fairly extensive elements that are whitish, grey or both. Stratocumulus is darker than Altocumulus because of its higher water content and greater vertical extent. 

Within the cloud. This cloud is composed of water droplets, occasionally interspersed with ice crystals when at low temperatures. The observer has the impression of flying in dense fog, with variations in visibility that may be large or small. Turbulence is generally moderate, but often greater than in the corresponding type of Altocumulus.

Above the cloud. Viewed from above, this cloud, like Altocumulus with detached elements, appears somewhat fleecy. Projections, bulges or domes may be present, either originating as part of the layer or as the upper parts of Cumulus congestus and Cumulonimbus, which have penetrated from below. Open spaces or crevices are often visible in the layer. A glory, fog bow and subsun (undersun) may be observed, sometimes simultaneously.