Snow ratios could really be impactful this weekend. It will be interesting to see as even some of the lower qpf's of "only" 2.5" could be crippling at 12 or 15:1. Even 10:1 for that matter. For what it's worth, GFS seems to be factoring at 16 or 17 in spots. When I lived in the Midwest, ratio forecasts seemed to be a bit more accurate than in Colorado.