Most of the smoke comes from just north of the top of the picture. Without much wind to mix and thin the smoke, much sits in river valleys, almost as if it were flowing down the Fraser River. But the smoke reaches over 10,000 feet down here; I saw a picture taken just above the layer, showing only the top 2,000 feet of Mt. Rainier. More informed discussion at http://cliffmass.blogspot.com/. The satellite updates are here.
Thank you for helping us follow this terrible, polluted air situation. It definitely is not as bad as the yellow ‘fog’ that pollutes China but sure continues to remind me of what man contributes to climate change.