First when I combined this panorama, I thought that I made some mistake somewhere. The sky just looked so different on one side than on the other. But after reviewing the source photos, I noticed that the middle one, has the both skies in the same photos, so there was no mistake :) I think it must have rained somewhere in the middle of this, as it just looks that way.
This one is also quite a big shot, 78Mpix to be exact. It was created from three images, each one from 3 exposures. BTW. I really like this view, so be ready for more photos from this spot over the next weeks :)