@electrickeet Yes, I'd thought you knew about it which is why I didn't say anything earlier; sorry about that.
It was unusually active and visible from 2200-0200 (I had good luck around 2300) Friday, but might be visible today (Saturday) as well. Seattle definitely has light pollution and the colors aren't as clear to naked eye as with a phone camera, but it shows up mostly as distinctly lighter areas of sky which don't match to clouds.
@Leucrotta I suppose I'll try again tonight. Thanks!