Lightning cracks during an eruption of Iceland’s Eyjafjallajökull volcano in 2010. The eruption’s ash clouds delayed European air travel for nearly a week. Storms over volcanoes contain the same ingredients as storms over your hometown—water droplets, ice, and occasionally hail. The interaction of all of these elements creates an electrical charge that sparks lightning. Active craters add ash to the mix. (Related: “Iceland Volcano Pictures: Lightning Adds Flash to Ash” and “Pictures: Volcano Lightning, Illuminated.”) For an in-depth exploration of extreme weather events around the world, read National Geographic magazine's September feature "Weather Gone Wild." --Tasha Eichenseher

Volcano Lightning, Iceland

Lightning cracks during an eruption of Iceland’s Eyjafjallajökull volcano in 2010. The eruption’s ash clouds delayed European air travel for nearly a week. Storms over volcanoes contain the same ingredients as storms over your hometown—water droplets, ice, and occasionally hail. The interaction of all of these elements creates an electrical charge that sparks lightning. Active craters add ash to the mix. (Related: “Iceland Volcano Pictures: Lightning Adds Flash to Ash” and “Pictures: Volcano Lightning, Illuminated.”) For an in-depth exploration of extreme weather events around the world, read National Geographic magazine's September feature "Weather Gone Wild." --Tasha Eichenseher
Photograph by Sigurdur H. Stefnisson, National Geographic

Extreme Weather Photos

From volcano lightning to landslides, Mother Nature throws some spectacular and scary screwballs our way. Take a look at the weirdest and wickedest weather of all.

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