Cumulonimbus Clouds Cumulonimbus clouds are much larger and more vertically developed than cumulus clouds which form in a more stable atmosphere. They can exist as individual towers or form a line of towers called a squall line often present at cold fronts.
Sam Sheppard was an American physician best known as a homicide suspect in his wifeâs murder.
This article is about the video game character. For astronaut and commander of Apollo 14 and Freedom 7, see Alan Shepard. For other people, see Shepard (name). Commander Shepard is the player character in BioWare's Mass Effect game trilogy: Mass Effect, Mass Effect 2, and Mass Effect 3.