Kelvin-Helmoltz Clouds Over the Sierra Nevada?

I defer to those who know more about such things, so are these Kelvin-Helmoltz clouds I saw today over the Sierra Nevada east of Madera? We were driving home on Highway 99 in the Great Valley when we saw these clouds forming on the eastern horizon in the Sierra between Kings Canyon and Yosemite National Parks. Kelvin-Helmoltz clouds form when there are winds blowing in separate directions at different levels in the atmosphere.