I made my weekly 170 mile weekend trip to my home this past Thursday. The flight takes me from Cloverdale California (O60) to Pine Mountain Lake (E45) which is near Yosemite National Park. As I approached E45 I found myself in a ring of spectacular clouds. In the distance the orographic lifting of the 13000 foot peaks of the Sierras were attempting to build some massive cumulonimbus monsters. T…