How large can a cloud cover be?

[xpell]

Hi! I was watching satellite pics of the Earth and I noticed that continuous cover clouds can be really large. So... I felt curious and my question is obvious: Please, does anybody know how large can a cover cloud be on planet Earth, or at least a few of the largest measured ones? (Not necessarily during hurricanes, typhoons or the like.) Thank you in advance!

 

[Astronuc]

I think that is difficult to answer because of the many different types of clouds and conditions.
https://en.wikipedia.org/wiki/List_of_cloud_types#/media/File:Cloud_types_en.svg

https://en.wikipedia.org/wiki/Stratus_cloud
Stratus clouds are low-level clouds characterized by horizontal layering with a uniform base, as opposed to convective or cumuliform clouds that are formed by rising thermals. They have up to 2 km altitude/height and could be hundreds of thousands of miles in breadth. I'm not sure how one would measure such large coverage. I've flown coast-to-coast in the US, and occasionally, the cloud cover was continuous for most of the flight.

https://en.wikipedia.org/wiki/Stratocumulus_cloud
https://en.wikipedia.org/wiki/Nimbostratus_cloud

There are localized effects - https://en.wikipedia.org/wiki/Cumulonimbus_cloud - with a height of 16 km. Apparently some have been recorded in the tropics with heights of 22 km or more.