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This afternoon there was a spectacular storm, with lightning and thunder, in Casserres, in the Berguedà region, whose images we can see in Las Fotos de los Lectores de La Vanguardia. It highlights the plasticity of lightning in the sky at the time of discharge.

Lightning is a powerful natural electrical discharge of static electricity, produced during a thunderstorm, which generates an electromagnetic pulse.

The precipitated electric discharge of lightning is accompanied by the emission of light (lightning), caused by the passage of electric current, which ionizes the air molecules, and by the sound of thunder, developed by the shock wave.

Electricity (electrical current), passing through the atmosphere, rapidly heats and expands the air, producing the characteristic noise of thunder.

Summer storms can give rise to these powerful natural electrical discharges of static electricity and offer us a real spectacle of light and sound in the sky, like fireworks.