Cb capillatus

This cloud developed from a mundane cumulus mediocris cloud as was explained in detail here. That cu mediocris grew and grew until it becamne the photographed cumulonimbus capillatus cloud due to the clearly fibrous or striated structure at the very top of the cloud and with buldges in the bottom between the fortification and the tree. The first thumbnail is a panoramic view of the same cloud as seen from Valletta where rain was falling at the background whilst the rest of the sky remained completely clear. It also represents the point where the sea breezes converged together hence starting to rise up. The second thumbnail shows heavy rain generated underneath that cloud causing the same cloud to dissipate. The third thumbnail is the weather sounding indicating very light winds at all levels of the atmosphere which was a key feature for this weather phenomena to occur rather than just instability as it allowed the air to rise steadily unhindered by strong prevailing winds. Finally, the fourth and fifth thumbnails are the visible satellite image and the rainfall radar respectively depicting how very isolated the rain and clouds were and only confined to the hot landmasses. Whilst such phenomena are common in Summer on the major Islands of the Mediterranean, it’s less common for such a convective cloud to also form over the Maltese Islands in early Summer.

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