Cumulonimbus (Cb) SKYbrary Aviation Safety
![](https://skybrary.aero/sites/default/files/cumulonimbus%20anvil%20top.jpeg)
Definition Cumulonimbus is a heavy and dense cloud of considerable vertical extent in the form of a mountain or huge tower, often associated with heavy precipitation, lightning and thunder. The mature Cumulonimbus cloud has a distinctive flat, anvil shaped top.
![](https://i.ytimg.com/vi/-OaYhByvjEI/mqdefault.jpg)
Turbulent flight through cumulonimbus clouds - during heavy Pisa approach
![](https://www.anac.gov.br/en/safety/aeronautical-meteorology/images/thunder3.png)
Thunderstorms — ANAC National Civil Aviation Agency - Brazil
Weather SKYbrary Aviation Safety, PDF, Climatology
![](https://cdn.windy.app/site-storage/posts/March2022/QOgAkAA5TMYjW3Adc5Yl-tn.jpg)
Cumulonimbus clouds — a sign of severe weather
![](https://skybrary.aero/sites/default/files/Separated_Radome.jpg)
A321, en-route, Gimpo South Korea, 2006
Fbol User Manual V3.4, PDF, Precipitation
![](https://pub.mdpi-res.com/sensors/sensors-23-07953/article_deploy/html/images/sensors-23-07953-g001.png?1695025385)
Sensors, Free Full-Text
![](https://cloudatlas.wmo.int/images/cartoon/Cumulonimbus.jpg)
Cumulonimbus (Cb) International Cloud Atlas
![](https://www.anac.gov.br/en/safety/aeronautical-meteorology/images/thunder15.jpg)
Thunderstorms — ANAC National Civil Aviation Agency - Brazil
![](http://www.cloudgallery.mpich.de/Cumulonimbus/CbCalvusIcing/images/CbCalvusVereisend1.jpg)
Cloud Gallery
![](https://skybrary.aero/sites/default/files/cumulonimbus%20anvil%20top.jpeg)
Cumulonimbus (Cb) SKYbrary Aviation Safety
![](https://upload.wikimedia.org/wikipedia/commons/thumb/9/93/Fly00890_-_Flickr_-_NOAA_Photo_Library.jpg/640px-Fly00890_-_Flickr_-_NOAA_Photo_Library.jpg)
Cumulonimbus cloud - Wikipedia
![](https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/Supercell-cumulonimbus.jpg/330px-Supercell-cumulonimbus.jpg)
Cumulonimbus and aviation - Wikipedia
![](https://skybrary.aero/sites/default/files/Wxradar1.jpg)
/sites/default/files/Wxradar1.jpg