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