Geograph - photograph every grid square

Looking north over Waterhead and the Wateredge Inn. A lenticular cloud has formed over the summit of Scandale Fell.
"Lenticular clouds, technically known as altocumulus standing lenticularis, are stationary lens-shaped clouds that form at high altitudes, normally aligned at right-angles to the wind direction.
Where stable moist air flows over a mountain or a range of mountains, a series of large-scale standing waves may form on the downwind side. Lenticular clouds sometimes form at the crests of these waves."