Lenticular Clouds?

This afternoon we had some beautiful cloud formations. I am trying to decide whether these are in fact Lenticular Clouds. They could be seen in the West and appear to line up with North winds that blew today. Just to the North of the clouds is Winter Hill which is about 1250ft ASL. The clouds remained stationary for a long time even though the winds were quite strong.
Have I seen a rare event today?

The weather was sunny today, but very cold with a biting North wind.