Would I have gone anywhere near Squaw Mountain where you lived?
No, you were in the Blue Mountains of Eastern Oregon. The Cascades run north/south through central Washington/Oregon & and northern California.
Our home was on the border of the Mt. Hood National forest 50 miles west of Mt. Hood. Estacada was the closest town about 12 miles down Squaw Mountain Rd.
When Mt. St. Helens blew we got dusted by ash; we were about 50 miles south and 30 miles east of the eruption.