Early-October Andes System

1. Day 12·Oct 3·Likely·66cm(-32)

   Confidence holds: 54–66cm for Valle Nevado, La Parva Oct 6–8

   Day 12: the window has slid a day later, but totals remain strong. We expect 66cm for Valle Nevado and 65.9cm for La Parva during the window from October 6 to 8. Portillo is forecasted to receive 63.1cm, while Lagunillas and Penitentes are looking at 54.1cm and 39.3cm, respectively. The biggest day for all resorts is projected for October 6, with Valle Nevado leading at 46.1cm. Confidence in these totals is still likely, and we are on track with the trends. As we approach the event, we will continue to monitor any shifts in timing or totals.

   Window Oct 6–8 · Valle Nevado

2. Day 11·Oct 2·Likely·98cmFirst prediction

   Confidence builds: 51–159.6cm for La Parva Oct 5–8

   The prediction for the early-October Andes system indicates La Parva receiving 98.1cm, with a range of 51–159.6cm. This storm is expected to deliver significant snowfall across the region, driven by a favorable pattern for moisture and temperature. La Parva and Valle Nevado are positioned to receive the most snow, both projected to see their biggest day on October 6 with 53.7cm. Portillo and Lagunillas are also likely to benefit, though with slightly lower totals. Penitentes may see less impact, but still receives a respectable 63.2cm. Changes in the forecast could arise from shifts in moisture availability or temperature fluctuations.

   Window Oct 5–8 · La Parva

snowrain low, snow highraindryThe dots are the freeze line — the height where rain turns to snow. Solid: straight from the models. Hollow: estimated from temperature. Above the summit line it rains on the whole mountain; below the base line it snows all the way down. Blue bars are snow in cm, amber bars rain in mm; the totals above are their sums.

Enlarge rain / snow line

• LiveValle Nevadobiggest day 47cm on 6 Oct · on trackPredicted65cm41–89cm across the models
• LivePortillobiggest day 44cm on 6 Oct · on trackPredicted59cm4–118cm across the models
• LiveLa Parvabiggest day 40cm on 6 Oct · on trackPredicted58cm12–89cm across the models
• Lagunillasbiggest day 33cm on 6 Oct · on trackPredicted48cm0–128cm, models far apart
• Penitentesbiggest day 32cm on 6 Oct · on trackPredicted41cm0–85cm, models far apart

• PortilloWe predicted 59cm. 23cm fell.Miss