Banner cloud, Mt. Sir Donald, British Columbia, Canada.

Wave clouds, South Island, New Zealand.

Wave clouds, southern Utah.

Vortex clouds, Colorado Rocky Mountains.

Wave clouds, Boulder, Colorado.

Wave clouds, Boulder, Colorado.

Wave clouds, Boulder, Colorado.

Wave clouds, northern Arizona.

Wave clouds, central Colorado.

Wave clouds, Indian Peaks, Colorado.

Wave clouds, eastern Colorado.

Wave clouds, northern Arizona.

Wave clouds, Boulder, Colorado.

Wave clouds, northern Arizona.

Wave clouds, northern Arizona.