All the foggy clouds were wiped out in the cataclysm. :)
Seriously, though, there are seven clouds, all with a 20-foot radius and 20 feet high. The three that the cloud giant did not cast are at 60N65E, 100N20E, and 20N20E. The four that the cloud giant cast are at 100N65E, 20N60E, 80N95E...