File talk:Cahokia 1.jpg

I think that this cloud might be already a cumulonimbus calvus instead of cumulus congestus. Some of its tops are clearly flattened and lost some cumulus characteristics (i.e. they look like the transformation into cirriform cloud has started).

Je suis d'accord. Je tends même à parler de cumulonimbus incinus. Il y a aussi un élément important qui est la ligne de flanc à l'avant qui suit la séquence suivante: cumulus humilis, cumulus mediocris, et cumulus congestus. Malosse (talk) 13:32, 8 August 2016 (UTC)