| 21. | If you see a thundercloud and lightning comes, you associate lightning with thunderclouds.
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| 22. | Thunderclouds gathered over center court at the National Tennis Center during the second set.
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| 23. | Second, a thundercloud, or occasionally a cumulus cloud, must be present.
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| 24. | This notion is used to predict the possibility of tornadic development in a thundercloud.
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| 25. | Information available about Thundercloud is limited and vague.
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| 26. | They dance in the void tens of miles above thunderclouds, with no obvious connection.
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| 27. | I searched the sky for afternoon thunderclouds.
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| 28. | Uman notes that lightning can reach out as far as 10 miles from a thundercloud.
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| 29. | "It's a big, black thundercloud with red tinges to it.
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| 30. | There were sharks and snakes and 20-foot waves in those waters along Thundercloud Break.
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