Where do you go to get FOUS data? One of my professors was a huge fan of it, used to use I think it was Texas A&M (which I did) but it like stopped working on there (this was several years back, maybe its good now).
Anyways, I know its a bit extended, but playing around with some mixing levels on 6z GFS for bufkit Thursday and it won't take much to get on the + side of 70.