| Cumulus castellanus |

Cumulus castellanus low on the horizon |
| Appearance |
Flat on the bottom, though has multiple "towers" on top |
| Precipitation cloud? |
Usually no, but can grow into cumulonimbus clouds |
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Cumulus castellanus (from Latin castellanus, castle) is a type of cumulus cloud that is distinctive because it displays multiple towers arising from its top, indicating significant vertical air movement. They are so named because they somewhat resemble the crenellation on medieval castles.[citation needed] Cumulus castellanus clouds are associated with the formation of tower cumulus or cumulonimbus clouds, and correspondingly can be an indicator of forthcoming showers and thunderstorms.
See also
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| High-level |
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| Low-level |
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| Vertical |
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