probably better weather science than astronomy,
but my image(s) of the day, found on this day anyway:
Location, Date: Veszprém, Hungary, 2009-06-16

Geo reference: 47.126000°, 17.909000°
full size image Triple contrail shadow on picture makes 3 cloud layers visible.
upload
on metnet by Noli
more images of the user
more great cloud shots on metnet