In the wake of a devastating avalanche in California’s Sierra Nevada Mountains, communities across Northern California are reeling from the loss of life and the impact on a close-knit network of families and athletes. The tragedy, which struck near Castle Peak on Tuesday, February 17, 2026, has been described as the deadliest avalanche in the United States in 45 years and the most lethal in California’s recorded history, according to local authorities and statements from the affected organizations.
The avalanche claimed the lives of at least eight people, with one additional person still missing and presumed dead as of Thursday evening. The group caught in the disaster consisted of 15 experienced backcountry skiers, including four professional guides from Blackbird Mountain Guides, who were concluding a three-day expedition in the rugged terrain near Donner Summit. Only six members of the party survived, enduring hours of perilous conditions as they sheltered under a tarp and awaited rescue.
According to the Nevada County Sheriff’s Office, the victims included seven women and two men among the dead and missing. The survivors—four men and two women—were ultimately reached by rescue teams after braving the aftermath of the slide for several hours. The search and recovery operations have been hampered by the same severe winter storm that contributed to the avalanche, making the already treacherous environment even more hazardous for emergency responders.
Many of those lost or affected were parents associated with Sugar Bowl Academy, a private independent school and ski training center located just a few miles from the avalanche site. The academy, renowned for its competitive skiing programs and college preparatory courses, serves students from sixth to twelfth grade and attracts young athletes from across California, especially the Bay Area and Marin County. The school’s ties to the tragedy run deep, as multiple victims were mothers and fathers of current or former students, according to sources involved in the search and rescue effort and statements from the academy itself.
In a statement issued Wednesday evening, Sugar Bowl Academy’s Executive Director Stephen McMahon expressed the collective grief and resolve of the community: “We are an incredibly close and connected community. This tragedy has affected each and every one of us. The depth of support for the families whose lives have been changed forever reminds us of how special this community is.” The academy has chosen not to release the names or personal details of the victims out of respect for the families’ privacy, a sentiment echoed by local officials and parents alike.
The group of skiers had embarked on their journey Sunday, February 15, staying in the Frog Lake huts—cabins maintained by the Truckee Donner Land Trust at an elevation of about 7,600 feet. The expedition was meant to be a challenging but rewarding experience in the backcountry, an area famed for its beauty but notorious for its unpredictability, especially during major storms. The Castle Peak area, where the avalanche occurred, is a known backcountry zone without regular avalanche control work, increasing the risks for those who venture there.
Alex Alvarez, a former Sugar Bowl Academy student who split her school year between Redwood High School in Marin and the academy in the Sierra, voiced the shock felt by many in the region. “This is really unexpected in Tahoe,” she told local media. “We get big avalanches, but it’s usually just one or two people. So, seeing that there are nine people, it’s really devastating.” She added, “I am pretty surprised that there were people out there backcountry skiing, but I don’t think it’s a matter of anybody’s skill. I think it’s more Mother Nature saying, ‘Hey, this is a bad time.’”
The timing of the avalanche was particularly tragic, coming just days after Sugar Bowl Academy’s annual winter soiree—a celebration of community, achievement, and the shared passion for skiing. In the days leading up to the disaster, McMahon had cautioned families about the hazardous weather, urging patience and safety as a powerful winter storm swept into the Sierra Nevada. “Stay patient. It is better to get here safely than to rush it. It is going to be an epic week!” he wrote in a newsletter, unaware of the catastrophe that would soon unfold.
The loss has reverberated far beyond the slopes of Donner Summit. Marin County, home to many Sugar Bowl Academy families, has been especially hard hit. Max Perrey, mayor of Mill Valley, confirmed that some of the victims were mothers from his city, underscoring the deep connections between the Bay Area and the Sierra’s ski communities. Kurt Althof, whose son participates in the academy’s race program, summed up the widespread grief: “The only comment that I can possibly make is that it’s an absolute tragedy. My heart, my family’s heart, goes out to all of those that have been impacted by this.”
Among the deceased was also the spouse of a member of the Placer County Sheriff’s Office Nordic search and rescue team, highlighting the interconnectedness of the mountain community and the personal stakes for those involved in rescue efforts. The identities of the victims have not been made public, and officials continue to withhold names to honor the wishes of grieving families.
Sugar Bowl Academy, founded in the early 1990s, has long been a hub for youth athletes seeking to combine world-class skiing with rigorous academics. Its programs support athletes from ages 5 to 23, offering both weekend instruction and full-time enrollment for those preparing for regional and national competition. The academy’s statement following the avalanche emphasized its commitment to supporting students, staff, and families through the tragedy, pledging ongoing care for those who have lost loved ones.
As investigators work to determine the precise circumstances that led to the avalanche, questions linger about the risks of backcountry skiing during severe weather. While the Castle Peak area is beloved for its challenging terrain, it is also known for the absence of avalanche mitigation measures, making trips in storm conditions especially perilous. There has been no indication that the outing was an official academy event, and the decision to proceed with the trip amid a major storm remains a subject of discussion within the skiing community.
The enormity of the disaster has prompted reflection and a renewed focus on the importance of safety, preparedness, and community support in the face of nature’s unpredictability. For those left behind, the pain is raw but the bonds of shared experience and mutual care offer a path forward. As the Sugar Bowl Academy and its extended family gather to mourn, remember, and heal, the story of this avalanche stands as a somber reminder of both the risks and the deep connections forged in the mountains.