"Bit of a slow start to the season here.."
Actually there was much hype over a fairly substantial storm in May. La Parva and El Colorado opened early. I haven't been monitoring South America weather as we have a lot of other plans this summer, but it sure sounds like June/early July underperformed.
Portillo season-to-date snowfall has been 97 inches. Most of that was probably back in May as the base is 25-43 inches and Roca Jack/Vizcachas are not open. Portillo is the only area down there that publishes its snow total.
Snow-forecast tends to overestimate in South America, and at the Valle Nevado group in particular. Chillan gets the most snow by reputation (I've read enough to believe that's credible) and it sounds like that's what is predicted for the next storm. Getting contemporary info about Chillan from afar is next to impossible. It has good skiing, but you're only going to find out about from online TR's.
Mattadvproject went to Chillan last year, got very lucky because it had an awful season and he was there one of the two weeks it was passable.
We do have a moderate El Nino going now, so that raises the odds a bit for Portillo/Valle Nevado/Las Lenas getting decent snow over the next couple of months.