Ribbon of light-several mls wide-several mls long-moving in wave motion, visible/invisible/visible again possibly due to high clouds.

On Friday August 19, 2022, at approximately 10:45 pm in the Northwestern sky above Nampa, ID., my wife and I witnessed an ariel "white" light phenomenon. We estimated it to be around 7-8 thousand feet high. It consisted of a form similar to a white ribbon several miles wide and several miles long. We could recognize its approximate width and length but no other dimensions. It moved in a wave like pattern. The event lasted approximately 20 seconds. It was visible and then not visible, then became visible again, possibly due to high clouds obstructing our vision. It then simple faded away. The pattern of this phenomenon was unlike anything familiar in the night sky. No images were captured as the event was too short.