Scene notes:

… in daylight heating above distant trees. A growing, towering Cumulus before a wider stratus cloud that is far greater in volume. Stratus clouds like these may have formed initially from ground heating. Such smaller rain clouds may spread out to turn into a layer (a stratus) instead of being pushed along with a surviving core to regenerate. In these local pockets of rising air, the humidity around the cloud condenses into visibility.
Time-lapse length (30 fps):
10 seconds and 22 frames.