Mt. Saint Helens is 100 miles to the southwest of us. The photo is from May 19, 1982, two years after the major eruption.
I did see a similar steam plume, on March 8, 2005 – I think, when hiking in an area to our north. We* were at about 5,900 feet on a ridge and had a good view to the south.
*Companion was Marty Kaatz, gone in 2012.
