Interesting Clouds

This is a very subtle photograph, but interesting because of it's subtlety.  I noticed these clouds on a recent walk along the harbor.  I have no idea what kind of clouds these are, but fortunately I have a friend named George, and he was a meteorologist for his first career.  He will know what these are, which is great.  He gave a talk for the astronomy club I belong to in New York City all about the different kinds of clouds, and is was absolutely fascinating!  I really love that this photograph is simple, and the colors are muted.  A nice change of pace for me.