This one has a backstory for me personally. A friend lived on the mountain side house where the back deck looked SW over the ridgeline. I would go up there occasionally and sometimes see a cool sky or sunset. This day July 4th 2013 had very unique clouds. There was a storm moving in and the clouds flowed toward the house like waves crashing over rocks into the shore. As they rolled over the ridge towards the house it was like being overtaken by a quiet soft fluffy blanket. He always said he never saw anything like that again. I just happen to have the camera with me that day and captured what I saw. He later ordered a print for the house. Shot with a Nikon D600, 28-85 @ 35mm, f 4.5, 1/400 s