You might also like the Mount St. Helens Symphony (no. 50), composed in 1983 and yep, it does. Recorded by Gerard Schwarz and the Seattle Symphony for Delos, and I think it's been re-released on Naxos. This time it's the work rather than the performance that's less than top-drawer, but hey, you get to hear a musical depiction of a volanco blowing up! How cool is that?

Also on the original disc, at least, is the City of Light Symphony (no. 22), which contains, so far as I know, Hovhaness's only scherzo.