Snowcat Triggers Massive Avalanche Near Jackson Hole Tram

The power of the Tetons was on full display this week. While conducting routine snow removal at the upper terminal of the iconic aerial tram, a snowcat triggered a massive avalanche on Rendezvous Mountain. The slide, which broke just outside the ski area boundary, revealed a staggering crown that averaged 8 feet and reached up to 10 feet in depth.

According to reports from the Bridger-Teton Avalanche Center, the slide failed on a layer of faceted snow from October and November. These "sugar" crystals are buried deep at the base of the snowpack, creating a persistent slab problem that has plagued the region since Christmas.

What makes this incident particularly chilling is the previous day’s efforts. Jackson Hole Ski Patrol had deployed two 30-pound bombs in the area to intentionally trigger any unstable snow. The explosives had no effect. However, the weight of the snow pushed by the snowcat provided the exact trigger needed to collapse the deep, weak layer.

This event is a stark reminder of the low probability, high consequence nature of current conditions. While the likelihood of triggering such a slide is low, the results are often catastrophic. Here at TGR, we’ve seen our fair share of gnarly moments in the mountains, but nothing beats coming home at the end of the day.

As the season progresses, it is imperative to stay updated with the daily forecast. The mountains are alive, and right now, they are demanding our full attention and respect.