Eight Skiers Die in California's Deadliest Avalanche Near Lake Tahoe

Tragedy Strikes Popular Backcountry Destination

Eight backcountry skiers were killed and one remains missing in what has become California's deadliest avalanche on record, officials confirmed Wednesday following a devastating slide near Lake Tahoe . The avalanche struck at approximately 11:30 a.m. Tuesday near Castle Peak in Nevada County as a powerful winter storm brought blizzard conditions to the Sierra Nevada mountains .

The group of 15 skiers had been staying at backcountry huts near Frog Lake since Sunday as part of a three-day guided expedition led by Blackbird Mountain Guides when the tragedy occurred during their return to the trailhead . Authorities said the skiers had little time to react when "someone saw the avalanche, yelled avalanche, and it overtook them rather quickly," according to Captain Russell "Rusty" Greene of the Nevada County sheriff's office .

Six survivors took shelter in a treed area and maintained contact with rescuers through emergency satellite messaging while waiting hours for rescue teams to traverse dangerous terrain in whiteout conditions . The survivors located three bodies before rescuers arrived, with two requiring hospitalization for non-life-threatening injuries .

Dangerous Conditions and Warning Signs

Three to six feet of snow had fallen since the group began their trip Sunday, with the area also experiencing subfreezing temperatures and gale force winds . That morning at 6:49 a.m., the Sierra Avalanche Center had issued an avalanche watch, indicating that large avalanches were likely in the next 24 to 48 hours .

The avalanche spanned about a football field's length and was classified as a D2.5 on a five-level scale measuring destructive potential—"A two would bury a person. A three would bury a house, and it's right in the middle of those two," officials explained . The Castle Peak area receives an average of 411.5 inches of snow annually, making it one of the snowiest places in the western hemisphere .

Nevada County Sheriff Shannan Moon said investigators would examine the decision to proceed with the trip despite forecasts for a major storm . This was the second deadly avalanche near Castle Peak this year, following a January incident that killed a snowmobiler .

Historic Context and Ongoing Risks

The tragedy marks the deadliest avalanche in the United States since 1981, when 11 climbers were killed on Mount Rainier, Washington . Each winter, 25 to 30 people die in avalanches across the U.S., according to the National Avalanche Center .

The area near Donner Summit—one of the snowiest places in the Western Hemisphere with nearly 35 feet of annual snowfall—was closed to the public for nearly a century until reopening in 2020 . Unlike ski resorts, there is no avalanche mitigation in the wilderness backcountry where Tuesday's slide occurred .

The tragedy has deeply affected the tight-knit backcountry skiing community, with one of the deceased being the spouse of a Tahoe Nordic search and rescue team member . The Sierra Avalanche Center warned that avalanche threats remained high Wednesday, leaving the snowpack unstable and unpredictable in the steep, craggy terrain .

Safety Equipment and Recovery Efforts

Experts emphasize the critical importance of proper avalanche safety gear, including beacons, probes, shovels, and satellite communication devices for backcountry travel . While the skiers carried emergency beacons and at least one guide could send text messages, it wasn't clear if they were wearing avalanche bags—inflatable devices that can keep skiers near the surface .

The bodies of the eight deceased skiers remain at the scene due to persistent avalanche risks, with search crews placing avalanche poles to mark locations for future recovery when conditions improve . Authorities have notified families that the mission has shifted from rescue to recovery operations .

As climate patterns continue shifting mountain snowpack stability, this tragedy underscores the evolving challenges facing backcountry recreation. Enhanced forecasting technology and safety protocols may help prevent future disasters, but the fundamental risks of venturing into avalanche terrain during dangerous conditions remain unchanged.