A shot of the rare Kelvin-Helmholtz waves in cirrus clouds.

Mamatus cloud near Cromarty in Scotland

Sunset over Port Gavern, Cornwall

This thunderstorm 'Anvil' was more than thirty mile away. Minneapolis, USA.

A squally shower (with rainbow) in the Bristol Channel

A turbulent sky over Snowdonia, Wales

"What global warming?". A power station near Karlsruhe, Germany.

Beaulieu-sur-Dordogne in the early moring mist

Cumulo-Nimbus over the Massif Central in France

A startling monochrome rainbow against a red sky, during a Minnesotan storm.

Cathedral Rocks, Yosemite after a recent snow shower

A showery, blustery day over Lough Swilley, Ireland

Bottom of a thundercloud lit by the setting sun

Clouds forming just before a severe hail storm

Strange cloud formation during the Tornado season in Minneapolis

A dramatic bank of cumulus signals a cold-front.

Evening mist filling the valleys in Andorra

Beautiful cirrus cloud formation