Look Amazing - Cumulus mediocris cloud (Awesome )

These clouds are common in the advance of a cold front or in unstable atmospheric conditions such as an area of low pressure.

They can grow into larger clouds (Cumulus Congestus) which could bring rain, winds and in worse cases, thunder and lightning.

If these clouds are present in the morning or early afternoon they show a significant instability in the atmosphere likely leading to storms later in the day (if cloud is thickening, if thinning can lead to calm weather)