After a totally clear start here, a line of cloud developed over Coleraine,
with a base around 9000ft and extending up to cirrus levels.

http://www.mikett.plus.com/waves/DSC00006.JPG

With clear skies either side of it, the appearance was that of a wave cloud
- albeit a very large one. Then I realised the wind was blowing parallel
to it and not at right angles as is typical of lenticular clouds. It seems
to be linked with the frontal activity over GB heading this way and is
clearly seen on this 12.21z NOAA pass:

http://www.dfd.dlr.de/ftp/put/wetter...2011221.uk.jpg

--
Mike Coleraine posted to uk.sci.weather 01/12/2003 13:18:44 UTC
My aurora images here http://www.mtullett.plus.com/29a-oct and
http://www.mtullett.plus.com/20-nov/