A mysterious new cloud formation has been noted and labeled an "asperatus" cloud. The unusual choppy underside surface of the clouds is believed to be due to strong winds.
Please go to this website and check out the pictures and write up.
I especially like the picture from New Zealand it looks like something out of a Sci Fi movie. I have seen clouds that look like the picture taken in Iowa when Esteban and I were walking Bellini here in Kansas City about 2 years ago. I remember because I had never seen clouds look like that before, but hey I am from Arizona I didn't see too many clouds growing up anyway. :)