"Martin Rowley" wrote in message
...
"Will Hand" wrote...
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)

... thanks Will - yes I thought of you when I looked at the imagery -
tramping about the Moor :-)

The mechanics involved must have been quite interesting; I only have
access to low-res imagery, so couldn't accurately pinpoint the 'origin' of
the divergence seen on the course-res imagery, but it was quite dramatic;
it looked for all the world as if Dartmoor was steaming *westward* through
a bank of Sc leaving a clear wake. The mesoscale (even microscale)
circulations must have been quite interesting. Had a look through 'Images
in Weather Forecasting' but couldn't find anything similar.

Martin.



Hi Martin, another thought, do you remember Von Karman vortices? They are
sometimes seen where the Azores interrupts a stable flow.

Will
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