![Aerial view of two layers of clouds : down, some altocumulus (Ac) clouds and up, some stratocumulus clouds (Sc Stock Photo - Alamy Aerial view of two layers of clouds : down, some altocumulus (Ac) clouds and up, some stratocumulus clouds (Sc Stock Photo - Alamy](https://c8.alamy.com/comp/BB9F17/aerial-view-of-two-layers-of-clouds-down-some-altocumulus-ac-clouds-BB9F17.jpg)
Aerial view of two layers of clouds : down, some altocumulus (Ac) clouds and up, some stratocumulus clouds (Sc Stock Photo - Alamy
![CLOUD: Semi-transparent Altocumulus (Ac) DESCRIPTION: Translucent bands or patches in a relatively continuous layer. | Clouds, Translucent, Phenomena CLOUD: Semi-transparent Altocumulus (Ac) DESCRIPTION: Translucent bands or patches in a relatively continuous layer. | Clouds, Translucent, Phenomena](https://i.pinimg.com/originals/85/32/38/853238092441c441edcef9f7674098f8.png)
CLOUD: Semi-transparent Altocumulus (Ac) DESCRIPTION: Translucent bands or patches in a relatively continuous layer. | Clouds, Translucent, Phenomena
![CLOUD: Altocumulus (Ac) in Layers or Altocumulus with As or NsDESCRIPTION: In one or more opaque layers, sometimes with Altostratu… | Clouds, Blue clouds, Phenomena CLOUD: Altocumulus (Ac) in Layers or Altocumulus with As or NsDESCRIPTION: In one or more opaque layers, sometimes with Altostratu… | Clouds, Blue clouds, Phenomena](https://i.pinimg.com/736x/e3/8a/01/e38a01acfa4bd4294158850309571955.jpg)
CLOUD: Altocumulus (Ac) in Layers or Altocumulus with As or NsDESCRIPTION: In one or more opaque layers, sometimes with Altostratu… | Clouds, Blue clouds, Phenomena
![NWS Portland on Twitter: "More Altocumulus (AC) fun this evening. What species of AC are we looking at? A. Stratiformis B. Lenticularis C. Castellanus D. Floccus hint: it helps to know a NWS Portland on Twitter: "More Altocumulus (AC) fun this evening. What species of AC are we looking at? A. Stratiformis B. Lenticularis C. Castellanus D. Floccus hint: it helps to know a](https://pbs.twimg.com/media/EWvPqWXXkAIjFvB.jpg:large)