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Today I would like to show in La Vanguardia Readers’ Photos some images that I took in Sant Antoni de Vilamajor, in Vallès Oriental, whose main element are the clouds or cumulonimbus of Baix Montseny.

Precisely these clouds were responsible for, a few hours later, rain and hail in this area. Continuing with the cumulonimbus, it must be said that they appeared suddenly and that, in addition, they grew very quickly.

So these big popcorns, clouds as if painted in the sky, went from being huggable like cotton balls to causing problems with the hail that fell.

Cumulonimbus or cumulonimbus clouds are highly vertically developed clouds, internally formed by a column of warm, humid air that rises in the form of a rotating spiral.

Its base is usually less than 2 km high while the summit can reach 15 to 20 km high.