This photo shows how cumulus and stratocumulus clouds can co-exist together. This cloud formation happened due a relatively steep lapse rate at the very surface of the atmosphere gradually weakening at a height of approximately 2 km. This caused the rising clouds bubble (pictured here) to slowly slow down its ascent and spread more horizontally as shown in the photo. An upper low was present over the area. Another photo of this cloud cover can be found by clicking on the first thumbnail.