Sky watchers are in for a treat as weather conditions mean unusual sight likely to be spottedin parts of Britain ...

In this case, the Catoctin Mountains helped force air flowing in from the west to rise through a process known as orographic ... just above the clouds, which caused the forming wave cloud to ...

The Met Office have explained the strange looking clouds and given further detail for how they are formed. The weather agency say: "These lens-shaped orographic wave clouds form when the air is stable ...