https://maltaclouds.net/wp-content/uploads/2018/09/Cb-base3-1.jpg?v=156992004015362048adminhttp://maltaclouds.net/wp-content/uploads/2018/10/logo-1-300x138.pngadmin2014-04-18 17:21:202018-11-10 17:23:50Cb cloud base
Formation of cumulonimbus clouds due to an upper level low just to the East of a large omega high over Western Europe bringing cool air over the warm Med. sea creating instability. The weather charts attached to the right depict this situation. The 850hpa temperature (3rd thumbnail) shows a closed pool of cold air over the Central Mediterranean.