Portillo and Las Lenas both fall into the category of: “you’re there for the terrain not the powder.” It’s futile to chase powder from the opposite hemisphere. What you hope to get is smooth windbuff or corn.
This is all normal to me as Mammoth is my home mountain. The Alps are a little different in terms of sheltered areas above tree line preserving powder. That’s probably because there are higher peaks and ridges sheltering that powder from wind.
FWIW Soulskier says Las Lenas is windier than Mammoth, and even though I only skied one day at La Parva, wind effects (sastrugi, wide areas stripped of snow) were glaringly obvious.
Holy smokes powder chase effort:reward is terrible. Seems that the only way to do Portillo is to be prepared to make the call a day out and be prepared to commute to Los Andes with the hope of picking up a mini week cancellation. And the only way to do las lenas is to allocate 2 weeks for travel/wind holds.However, if one storm-chased this, you lost:
- Portillo - closed
- Las Lenas - Marte yet to open, mid/lower slopes opened July 25-26
- Valle Nevado / La Parva / El Colorado - got to 90% open by Monday, July 27th
Maybe Las Lenas can get Marte open sometime next week? Weekend of August 8th? Stability looks OK - 3 out of 5
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Is there any other lift-served ski region in the world with this much snow volatility?
If you look in the terms and conditions when you registered for this forum, you'll see that it includes an exam on a variety of snow-related topics -- after which we reserve the right to review your further participation here.I will screen shot your data and stare at it for 3 minutes prior to bedtime to ensure a good night sleep.
Is there any other lift-served ski region in the world with this much snow volatility?
I still maintain that a majority of snow in the alps comes in exactly this type of storm: humongous. With only some snowfall outside of the huge dumps. eg more Sierra like than Colo or BC like, making pre-booked skiing very much a crap shoot at best.

Is there any other lift-served ski region in the world with this much snow volatility?
Southern Hemisphere volatility is on another level. (...) Las Lenas is 50% and Portillo 56%.
Tony, is TISA a variant of this is Africa?TISA. And remember, Chile is the more competently governed country of the South American ski scene.
YesTony, is TISA a variant of this is Africa?