I wish I could provide a picture, but I wasn’t able to grab my camera. However, it’s easy to describe for you: Last June, on the US-Canda border, I saw a row of clouds, in a wave pattern, looking like a row of ten gallon hats! I WAG it could have been the profile (or edgewise view) of a stratocumulous undulatus pattern? Usually, we see this common wavy pattern from the ground looking up at its underbelly.
It was kinda like looking at a theatre curtain from the edge…like an exaggerted sine wave pattern. Also, if it means anything, this was beneath a cirrus Kelvin-Helmhotz wave (a wave pattern looking like dolphins jumping in and out of the water). The two patterns were parallel to each other.
Even in more detailed weather books, I have not found a mention of this most unusual cloud formation! So, I thought maybe those SDopers interested in meteorology might be able to give me some feedback.
Very strange and cool sight to see!