Keen photographer Garry Hornby spotted them above Huntington in York and posted: "Stunning mammatus clouds over Huntington road this morning." Fellow club member Kieran Delaney also shared a photo ...

Formed by cold air sinking down, mammatus clouds are usually seen when there is turbulence in a cumulonimbus cloud. Two astronauts are returning home after nine months in space. Nick Beake of the ...

Formed by cold air sinking down, mammatus clouds are usually seen when there is turbulence in a cumulonimbus cloud. A US Coast Guard rescue swimmer was lowered to pull the woman as high waters ...