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Authorities Launch Criminal Probe After Deadliest U.S. Avalanche Kills 8 Near Lake Tahoe

Authorities Launch Criminal Probe After Deadliest U.S. Avalanche Kills 8 Near Lake Tahoe
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Authorities in Northern California opened parallel criminal and workplace-safety investigations after a backcountry avalanche near Lake Tahoe killed at least eight skiers and left one missing and presumed dead, in what officials described as the deadliest U.S. avalanche in more than four decades sfchronicle +1. The slide struck a guided group of 15 on Feb. 17 in the Castle Peak backcountry near Donner Summit, about 10 miles northwest of Lake Tahoe, as they skied out from a three-day hut trip in the Tahoe National Forest nytimes +1.

The victims, including three professional mountain guides and six clients on a tour run by Blackbird Mountain Guides, were swept down a steep ravine as a powerful Sierra storm dumped heavy snow onto an already fragile snowpack nytimes +1. Six people were rescued; eight bodies have been recovered and one skier remains missing but is presumed dead, authorities said nytimes. Families identified six of the women killed as close friends and experienced backcountry skiers who “deeply respected the mountains” and had trusted their guides to manage the risks skimag.

What Investigators Are Examining

The Nevada County Sheriff’s Office said it was conducting a standard criminal probe “into whether criminal negligence was involved,” while the county coroner investigates the deaths themselves sfchronicle. Any decision to file charges, potentially including involuntary manslaughter based on criminal negligence, would rest with the Nevada County district attorney sfchronicle +1. Cal/OSHA, California’s workplace-safety regulator, has also opened an investigation into Blackbird Mountain Guides’ practices and permits, with up to six months to determine whether to issue citations nypost.

Under California law, criminal negligence requires more than a mistake: prosecutors must show conduct that grossly deviated from what a reasonable person would do, creating a high risk of death or great bodily injury, and that this behavior was a substantial factor in causing the deaths ktvu. Investigators are expected to scrutinize whether the group’s leaders pressed ahead despite an avalanche watch from the Sierra Avalanche Center and rapidly worsening storm conditions, and whether they chose a descent route later described in local reporting as the most hazardous option out of the backcountry basin nytimes +1. Blackbird’s founder, Zeb Blais, said in a written statement the company was “devastated” and that “it’s too soon to draw conclusions” while investigations are underway sfchronicle.

A Rare Move Into Criminal Territory for Avalanche Tragedies

Criminal inquiries into fatal avalanches in the United States have been rare, even as civil lawsuits and settlements have followed deadly slides both in and out of bounds at ski areas abc7news +1. A high-profile Colorado case in 2020 saw two backcountry snowboarders charged with misdemeanor reckless endangerment after triggering an avalanche that damaged state avalanche-control infrastructure above Interstate 70; the case ultimately ended in plea deals with community service and no major restitution nytimes. By contrast, most fatal incidents at ski resorts, such as a 2020 in-bounds avalanche at Alpine Meadows near Tahoe, have led to wrongful-death suits and confidential settlements rather than criminal charges against operators or staff kqed.

Avalanche professionals have warned that aggressive criminal prosecutions could have a chilling effect on incident reporting and safety learning in a sport where risk can never be fully eliminated, even under professional guidance nytimes. “The main thing here is not to rush to judgment,” said Frank Carus, director of the Bridger-Teton National Forest Avalanche Center, who stressed the complexity of snow science and field decisions in comments about the Tahoe disaster sfchronicle.

The Bigger Picture

The outcome of the Tahoe-area investigations could help redefine where society draws the line between tragic accident and prosecutable negligence in high-risk mountain sports. If prosecutors pursue charges, the case will likely test how juries view professional responsibility in the backcountry when clear avalanche warnings are in place—and whether guides, companies or even clients bear ultimate accountability when a day in the mountains turns deadly.