Scipsy

Heavy Rain in Namibia and South Africa
Tornado in mature stage. Seymour, Texas, April 10, 1979. (Photographer: D. Burgess; via NOAA)

Tornado in mature stage. Seymour, Texas, April 10, 1979. (Photographer: D. Burgess; via NOAA)

Summer Lightning Near Keota, Colorado

Cloud and ship. Ukraine, Crimea, Black sea, view from Ai-Petri mountain. (Photo and caption by Yevgen Timashov) (via toscanoirriverente)

Angry clouds.

Cloud and ship. Ukraine, Crimea, Black sea, view from Ai-Petri mountain. (Photo and caption by Yevgen Timashov) (via toscanoirriverente)

Angry clouds.

Arsenic Life Is Nice; Living Clouds Are Nicer : Krulwich Wonders… : NPR
Photo and caption by Peter Gregoire
Noctilucents displaying over St. Neots in South Cambridgeshire. U.K.