21. Cumulonimbus can form alone, in clusters, or along cold front squall lines.22. Storms are created when a center of cumulonimbus . 23. Cumulonimbus are tall, dense, and involved in thunderstorms and other bad weather.24. Storms are created when a centre of cumulonimbus . 25. There were isolated cumulonimbus clouds with strong squalls and showers during approach and landing. 26. A glider pilot convinced that cumulonimbus are always violent risks getting a nasty surprise. 27. However it can also occur together with cumulus congestus or cumulonimbus at a cold front. 28. This left cumulonimbus as the only nimbiform type as indicated by its root-name. 29. Overshooting top of a cumulonimbus viewed from a plane crossing the Democratic Republic of Congo. 30. A cumulonimbus cloud emitting green is a sign that it is a forest fire season.
