- Cloud type, Cb: Cumulonimbus cloud cell
![Cloud type, Cb: Cumulonimbus cloud cell](http://www.skyartstock.com/peas/W923335S-SKYART.jpg)
- W923335S
- Cloud type, Cb: a new Cumulonimbus cloud cell has formed above smaller Cumulus. It is a small version of a regular storm with all the same features: flat anvil, overshooting top, and a bubbling updraft. Such small thundershower cells are most common in cool, moist and unstable summer weather.
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