- Standing Wave Pattern with flat Altocumulus bands
![Standing Wave Pattern with flat Altocumulus bands](http://www.skyartstock.com/peas/W941361Z-SKYART.jpg)
- W941361Z
- Flat Altocumulus bands fill the crests of a standing wave pattern to the lee of hills. The wave crests are widely spaced and flat, suggesting that the layer of moist air being bent upward and condensed into cloud is shallow.
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