This evening we had some spectacular clouds here in Norway. The where at a very high alltitude, because they could be seen south high in the air both
from Oslo and a town called Larvik 200 Kilometers from Oslo.
image source: http://www.tom-erik.no/static/ats/IMG_8074%20copy2.jpg
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image source: http://www.tom-erik.no/static/ats/IMG_8113%20copy2.jpg
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Later the evening they dissapeard but som cluds still hung high up as you can see on the left.
image source: http://www.tom-erik.no/static/ats/IMG_8121%20copy2.jpg
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PS: The pictures are free to use for whatever purpose.
If I'm not mistaking, You can see gravity waves at the two first pictures..
[edit on 19-1-2008 by tep200377]