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Mountain wave. Note the stationary nature of some of the clouds.



.... My fault - I know they're mountain waves!

In my haste, I didn't make it clear what had excited me: it was the
'bow-wave' nature of the pattern that appeared to be spawned downwind
[i.e. to the east] of the highest part of the moor around Yes Tor /
High Willhays. I assume it was due to some turbulent descent
along-flow clearing a lane in the Sc len. It's mostly gone now of
course, presumably with subtle changes in either the flow direction or
humidity content, though there are still some elements over east
Devon/west Dorset/south Somerset.

Martin.


--
Martin Rowley
West Moors, East Dorset (UK): 17m (56ft) amsl
Lat: 50.82N Long: 01.88W
NGR: SU 082 023