New series. More unusual natural phenomena, including freak hailstorms in the desert, deadly `rain bombs', underwater volcanoes that affect the weather on the surface, lakes that it is possible to walk across, and a forest of rain-carved rock.

Examining strange weather events from around the world, including cities buried in snow, plagues of locusts falling from the sky, and changes in temperature that boil lakes and leave frogs frozen solid.

A look at icy waves in the Arctic and earthquakes in England. The programme also features vast floods, exploding rocks, weather on alien landscapes and lights that appear in the sky when seismic activity is taking place.

Weather conditions that cause fish to be washed ashore in India and draws sharks to the coast of Brisbane. Plus, an unusually heavy snowfall in Tucson, Arizona and strange circles in Namibia, as well as footage of hailstorms, lightning and thunder storms.

Featuring geysers erupting in the middle of a city, clouds that look like they have been cut with a razor, red rainbows, zombie trees and bridges struck by strong winds that are so fierce the structures start to wobble.

Strange sounds produced by unusual weather, including noises resonating from rocks and lakes and the roaring of twisters.

The influence of strange weather on the natural world, examining the factors that create caves of sapphires, blue lava, rainbow-coloured clouds and perfect cubes, lead to gatherings of walruses, or cause snow and beaches to disappear.

The documentary series exploring the mysteries behind bizarre climatic conditions continues, this time focusing on the weather's most colourful mysteries. Among the natural marvels highlighted are the top of a black volcano, and the bottom of a `rainbow' river.