Here's an account by weatherman Scott Stevens some might find interesting:
[quote[2012-1125 Little Clouds, Big Trails
Posted on November 26, 2012 by Scott
November 25, 2012
I had an inkling that this day was going to be a ‘good one’ for chemtrail photography. They had been active all night and a few lenticular clouds
had been seen over the mountains the night before.
These chemtrails are nearly always very “sticky” over and into these lenticular clouds in doing so, they clearly show us how the atmosphere is
behaving in and around these odd clouds. 0:12 through 5:30. A little iridescence also show up with a lot of rippling at 5:30.
There is something there pulling this trail into the cloud at 8:10.
All of these chemtrail planes have winglets… At 8:50. From about 10:00 on I am looking off to the west as flight after flight leaving trails in
the sky marking off kinks and gaps in previously laid down chemtrails. This is a great afternoon, with lots of blue skies, to contrast against the
persistent chemtrails being laid down this afternoon.
edit on 6-12-2012 by Tecumte because: link added