Cumulus congestus cloud
![](/Images/godic/202501/07/Cumulus_congestus_cloud2632.jpg")
![Cumulus congestus cloud over Cahokia Mounds Museum, Collinsville, Illinois](/Images/godic/202501/07/Cahokia_12632.jpg")
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Cumulus congestus clouds, also known as towering cumulus, are a form of cumulus cloud that can be based in the low or middle height ranges. They achieve considerable vertical development (family D2) in areas of deep, moist convection. They are an intermediate stage between cumulus mediocris and cumulonimbus.