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In these images in Las Fotos de los Lectores de La Vanguardia we can contemplate the spectacle of the sunset with mammatus clouds in Manlleu, in the Osona region.
In the following video we can see how the sky evolves with mammatus colored in a reddish-orange hue, due to the phenomenon of the glare at sunset.
Mammatus clouds can persist in the sky from a few minutes to several hours, until they fade and disappear.
It is very common for mammatus-producing storms to generate strong updrafts and thunderstorms. That is why air navigators avoid going through storms with mammatus.
These formations were first described in 1894 by William Clement Ley, who was a pioneer clergyman in meteorology who used weather forecasts.
