This photo of a lenticular or Flying Saucer cloud on Lion's Head in Cape Town, taken by Mary Hemsworth, is featured in a new book called Clouds That Look Like Things, published by the Cloud Appreciation Society. We will have a gallery of unusual cloud photos on the Telegraph site later today. Picture: Mary Hemsworth / BNPS Appreciation Society, Lion Head, Book Call, Call Clouds, Mary Hemsworth, Capes Town, New Book, Cape Town, Clouds Appreciation
South African surfer jumps off the back of a wave generated by a storm swell at one of Cape Town's big wave reefs known as Dungeons.
The photo of a shelf cloud approaching Ormond Beach in Florida was taken by Jason Weingart and is one of Nasa's five top picks in their Extreme Weather Photo Competition. We will have a gallery of extreme weather photos on the Telegraph site later today.
Absolutely spectacular shot of lenticular clouds over the Sandwich islands. Also known as altocumulus standing lenticularis, these are stationary, lens-shaped clouds that form at high altitudes These clouds form when moist air is forced to flow up around mountains and large hills. The water is super cooled and condensed from air below the dew point temperature.