Stratocumulus above cumulus clouds, all mixed up together.
Big cumulus clouds lit from behind with thin streaks of stratocumulus above.
An altocumulus cumulogenitus that developed to the east, late in the day. The top of the cloud flattened out due to temperature inversion in the upper atmosphere. Though not as big or powerful as a a cumulonimbus cloud, it's still pretty big. I watched a plane fly underneath it.