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Old August 25th 08, 08:02 PM posted to uk.sci.weather
Will Hand Will Hand is offline
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First recorded activity by Weather-Banter: Nov 2004
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Default Downwind of Dartmoor: patterns in SC sheet


"Martin Rowley" wrote in message
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wrote in message
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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.


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


If it's any help Martin at 1100 local this morning the Sc cloud base was at
circa 480m asl looking west (just covering the Hameldown ridge) and it was
drizzling very slightly. Ties in I think with the inversion higher up. Sc
elements slooked very thin with blue sky visible at times.

Will (Haytor, Devon, 1017 feet asl)
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