Here on Earth Browsing Sub-board I start to host and share my favorite GE cloud-imagery spottings, I have found while browsing Google Earth. All of your own findings are welcome in this thread!
One criterion it must be met, that image of the cloud is have to be exceptionally sharp and clear, so that fine-structure can be seen.
Now here you are two examples - my first findings:
*** Clouds in interaction, where it seems as if some cumulus updraft (probably erected from the swampy ox-bow wetlands on the ground) would just breaking through a thinner layer of cirrus clouds from below.
.And the one new I share by now is this sprouting cumulus with nice contrasts
------ EDIT: 2019.may.02.:
Also insert into this OP the following find of oGEC member 'sieminna', who shared it on oGEC in 2012. and who thought it weird enough to imagine something lurking behind it.
Mammatus (from lat. Breast-like) are bag-like shapes hanging on the underside of clouds. The special form of clouds occurs most frequently on the anvil or screen of the cumulonimbus, but it can also be observed in the cirrus, cirrocumulus, altocumulus, altostratus and stratocumulus as well as the ash clouds of erupting volcanoes.
They are generally still little-researched weather phenomena. There are various theories about their origin, each of which has not been proven. One of the most well-known theories says that they occur through evaporation processes on the underside of the cloud, if this cools and unstabilizes the air layer under the cloud, which in turn creates buoyancy, which ultimately leads to the development of the mammatus.
Only two times I could catch Mammas with my camera. On the oGEC I have posted one daytime photo, that lost, but the second one is still on display here on this board. It was taken in our backyard on a stormy night.