Patrick Boomer
EF1
On Tuesday I was able to follow the edge of a huge lee wave cloud for a few hundred km along the Alberta foothills down to the Kananaskis valley west of Calgary. It was the first time I have had a chance to watch a nice standing wave from the inside, with mountains for a backdrop to the east instead of prairie. November 25th and not enough snow for a snowball out there in chinook country. More.