John Roach, Esq. | August 23, 2026 | All Things Trial \ California Law

Castle Peak Avalanche Lawsuit Update: A San Francisco Lawyer’s Full Legal Analysis of the Competing Investigations and Cal/OSHA Fines

On February 17, 2026, an avalanche near Castle Peak, above the Frog Lake Backcountry Huts outside Truckee, killed nine people on a guided backcountry trip. It remains the deadliest avalanche in California history. I wrote about the case in February, when investigators were still working through whether the guide company that led the trip, Blackbird Mountain Guides, could face criminal charges, and what a civil wrongful death case against it might look like.

Six months later, the picture has filled in considerably, and the record now includes three separate, competing accounts of what happened: an independent avalanche-science investigation that criticized the guides’ decisions, the company’s own rebuttal and later independent report, and a state safety regulator’s citations. This update walks through the full factual record as it now stands, what each side is saying, and what all of it means for the legal questions — the statute of limitations, the waiver, and who could ultimately be held responsible — that families and anyone following this case are asking.

What Happened on February 17, 2026

The reconstruction below draws on the technical investigative record, including the Sierra Avalanche Center’s April report and a detailed technical breakdown published by SnowBrains.

The trip was run by Blackbird Mountain Guides out of the Frog Lake Backcountry Huts, a popular hut system reached by ski touring near Castle Peak and Donner Summit. Two separate guided groups — six women with two guides, and three men with two guides — had been staying at the huts and combined into a single 15-person party (11 clients, four guides) for the return trip to the trailhead on the morning of February 17.

The days before had brought an extreme storm. From February 15 to 19, the Central Sierra Snow Lab recorded 111 inches of new snow within four miles of the site. By the time the group set out, roughly 40 inches of storm snow had accumulated, and at the hour the avalanche released, sustained winds averaged 75.6 mph with gusts to 125.8 mph — conditions that also produced “very poor visibility” and later hampered the search and rescue response. Investigators have since traced the underlying snowpack problem to a dry spell from January 8 to February 10, during which a thin, weak layer of near-surface facets formed across north-facing terrain; that layer was buried under a rain crust and several inches of new snow on February 10, creating exactly the kind of unstable interface that a heavy, wind-loaded storm turns dangerous.

The group climbed to a nearby pass with hut staff mid-morning, then began skinning into terrain below Perry Peak before 11:00 a.m. The slide released around 11:00 a.m. — investigators have not been able to determine whether it was naturally triggered or set off by the group itself — as a soft slab avalanche, roughly size D2 to D2.5, that ran about 400 vertical feet through sparsely treed terrain and left a debris field about 100 feet wide. Thirteen people were caught; nine were buried in a compact area roughly 20 feet by 20 feet, three to eight feet deep. A ski binding had failed earlier for one guide and one client, delaying the two of them behind the main group — a coincidence that put them in position to perform a rescue that investigators credit with saving the lives of buried survivors who needed their airways dug out. Several people in the group carried avalanche airbags; none were deployed, consistent with a slide that struck with little or no warning.

Backcountry avalanche terrain near Lake Tahoe where the Castle Peak slide occurred

A survivor placed a 911 call around 11:30 a.m. Search and rescue teams did not reach the scene until roughly 5:30 p.m., by which point another two feet of snow had fallen. The ninth and final victim was recovered on February 20 using helicopter-based avalanche mitigation; the last four bodies were recovered on February 21. In total, six clients and three guides died; five clients and one guide survived, including two who were buried and rescued alive.

The April Report: An Independent Investigation Criticizes the Route

On April 3, 2026, an investigative report — compiled through the Sierra Avalanche Center and distributed via Avalanche.org, the national clearinghouse run by the Colorado Avalanche Information Center and the National Avalanche Center — gave the first outside, science-based account of what went wrong. Its central finding: the group “traveled below avalanche terrain and through the runout zone of an avalanche path during a period when a natural or human triggered avalanche was likely to very likely.”

The report also raised a second, more basic problem: group size and spacing. Established backcountry practice calls for exposing only one person at a time to avalanche terrain, and the report cited peer-reviewed research showing that larger groups — four or more people — have a higher chance of being caught in a slide. A combined 15-person party crossing avalanche terrain together, the report suggested, ran contrary to both principles.

The report was also candid about its own limits. Investigators were able to get detailed accounts from only two of the six survivors, both of whom had been near the rear of the group and had no role in route planning or decision-making; the survivors who had been nearer the front, and who might have been able to speak to why the route was chosen, were not interviewed, and investigators noted relying in part on a published news account rather than a direct interview to fill that gap. That matters here for a very practical reason: the people best positioned to explain the decision-making are disproportionately among the dead, which is likely to make reconstructing exactly why this route was chosen a genuinely contested, expert-driven question in any future case rather than a matter of straightforward eyewitness testimony.

Blackbird Mountain Guides pushed back immediately. A company spokesperson said the report “does not reflect the full scope of what transpired and does not include all of the facts and information currently under review,” while stating the company was fully cooperating with the ongoing investigations.

Blackbird Mountain Guides’ Own Account

The company followed its April pushback with a fuller response. On August 9, 2026 — three days before Cal/OSHA issued its citations — Blackbird Mountain Guides published the results of an independent investigation it had commissioned from avalanche professional Don Sharaf, posted on the company’s own live incident updates page. Its description of the immediate terrain is noticeably different from the picture implied by the April report’s “avalanche terrain” and “runout zone” language: the company says the group was in “low-angle, treed terrain” at roughly 7,850 feet, with a slope angle of 10 to 11 degrees — genuinely gentle by avalanche standards — and that GPS data shows the group repeatedly tried to reach terrain farther from where the slide eventually ran out, but was blocked by an open, uncrossable creek with vertical banks.

On the point that seems to trouble reviewers most — why an experienced guide service would route a 15-person group through a known runout zone — the company’s report offers a specific explanation: “The most likely explanation for the lack of spacing between skiers was that the guides did not recognize that they were in an avalanche path. The tight tree spacing, trees between the group and the start zone above, and the similarity to the terrain that they had just been crossing does not make the path easily recognizable.” In other words, the company’s position is that this was a failure to recognize a hazard hidden by trees and terrain, not a decision to knowingly enter ground the guides understood to be dangerous.

The company has also said, both in its earlier statements and in the August 9 release, that its guides were AMGA-trained or certified, AIARE-certified, and instructor-qualified in avalanche education, and that the guides in the field were in contact with senior guides at its base about conditions and routing throughout the trip. That claim runs directly against Cal/OSHA’s separate citation for inadequate employee training, discussed below — one of seven citations the company is now appealing.

Neither account resolves the other; if anything, together with the Cal/OSHA findings they sharpen the dispute into three overlapping but distinct positions. The April report says the group was in a known runout zone under conditions where a slide was likely to very likely. The company says the terrain was gentle where they stood and the danger wasn’t visually apparent, and that a blocked creek crossing — not a disregard for the forecast — is what put them there. Cal/OSHA, as discussed next, sided closer to the April report and went further, calling the failure to correct the hazard “willful.” Both the recognizability defense and the runout-zone finding can be factually true at the same time — a slope can be gentle immediately underfoot and still sit inside the path of a slide releasing from steeper terrain well above it, which is precisely why runout zones are treated as avalanche terrain in the first place — but reconciling what this specific group could and should have known, in the moment, is likely to be the central factual fight in any future civil case.

The Cal/OSHA Citations: What the State Found

SFist first reported that on August 12, 2026, Cal/OSHA issued seven citations against Blackbird Mountain Guides totaling $151,300. The agency’s own descriptions of the violations, detailed by CapRadio and CBS Sacramento, are the closest thing to an independent, third-party account with legal teeth behind it:

  • $81,000 — a willful violation for failing to correct the imminent hazard of traveling in avalanche terrain when the avalanche danger was rated High.
  • Additional citations for failing to provide effective employee training on avalanche hazard recognition and decision-making.
  • Additional citations for an inadequate hazard assessment of the terrain the group was led into.
  • A citation for failing to assess the need for, and provide, avalanche safety equipment — specifically avalanche airbags — to guides and clients.

Cal/OSHA’s account lines up more closely with the April Sierra Avalanche Center report than with the company’s low-angle-terrain explanation, and it goes a step further on the training question specifically — squarely disputing the company’s claim that its guides were adequately trained, regardless of what certifications they individually held. Blackbird Mountain Guides has stated it is appealing all seven citations and says the findings “do not reflect the reality of our profession.”

Regulatory safety citation document representing the Cal/OSHA findings against Blackbird Mountain Guides

Why a Willful Citation Matters to a Wrongful Death Case

A Cal/OSHA citation is a regulatory finding, not a jury verdict, and it does not decide a civil case by itself. The company is appealing, the fine could be reduced, and Cal/OSHA’s own standard of proof is not identical to what a plaintiff has to show in a wrongful death lawsuit. None of that should be overstated in either direction.

What it does do is hand any future plaintiff a piece of independent evidence that ordinarily takes months of expert work to develop from scratch — and here, two independent bodies (the Sierra Avalanche Center’s investigators and Cal/OSHA) have now reached broadly similar conclusions about the terrain, while the company’s own commissioned report reaches a different one. “Willful” is not a word a safety regulator uses lightly — it means the agency concluded the company knew about the hazard and chose not to correct it, rather than simply misjudging the terrain. That distinction is the same one I discussed in the original post: a liability waiver signed before a guided trip generally protects a company against ordinary negligence, but it does not protect against gross negligence or reckless conduct. A regulatory finding that a known, imminent hazard went uncorrected is exactly the kind of fact that supports a gross negligence argument rather than an ordinary-negligence one — and that distinction is often what decides whether a waiver bars a claim at all. The company’s counter-narrative — that the hazard wasn’t recognizable given the trees and terrain — is the natural rebuttal to that argument, and it’s likely to be litigated hard if a case is filed.

More Than One Potential Defendant

Coverage since February has surfaced a detail that matters for anyone evaluating a claim: the guided route to Castle Peak crosses U.S. Forest Service land under a special-use permit, but the Frog Lake huts themselves sit on privately owned land, managed by the Truckee Donner Land Trust, which selects and oversees the guide companies it partners with. That raises the possibility of a claim against the land trust for how it selected or supervised its guide partner — a theory that has not been tested and would depend on facts not yet public.

A claim connected to the Forest Service is a different and harder question. Federal land management agencies are generally protected from lawsuits over permitting and land-use decisions by what’s called discretionary function immunity, and any claim against a federal agency has to go through an administrative claims process first — filed directly with the agency, typically within two years of the incident — before a lawsuit can even be filed. That is a separate clock from the state deadline discussed below, and it is not a path to assume will work. Anyone considering a claim that touches federal land management should have that question evaluated early, not as an afterthought.

Where the Criminal Investigation Stands

Two separate government reviews have been running alongside each other since February. The Nevada County Sheriff’s Office opened a negligence investigation shortly after the avalanche and has forwarded its findings to the district attorney’s office for a decision on possible criminal charges, per CBS Sacramento’s reporting; Cal/OSHA’s parallel review is a workplace-safety inquiry, not a criminal one, and it’s the one that produced this month’s citations. As of this writing, no criminal charges have been filed. It’s worth being clear about what that does and doesn’t mean: a criminal case and a civil wrongful death case are separate tracks, running on different timelines and different burdens of proof. A family does not have to wait for a charging decision, or a conviction, to pursue a civil claim — and in practice, civil discovery often moves faster than a criminal investigation.

No Civil Lawsuit Has Been Filed Yet

Based on the public record as of this writing, no civil wrongful death lawsuit against Blackbird Mountain Guides has been filed over the Castle Peak avalanche, six months after the incident. That is not unusual. Serious wrongful death cases are often built quietly for months before a complaint is ever filed — gathering records, securing evidence like this Cal/OSHA file, and, in some cases, resolving with an insurer before a lawsuit becomes necessary at all. Waiting to file is not the same as waiting to act.

The Two-Year Deadline Still Runs From February 17, 2026

California’s general deadline to file a wrongful death or personal injury lawsuit is two years from the date of the incident, under Code of Civil Procedure section 335.1. For the Castle Peak avalanche, that deadline is February 17, 2028 — regardless of how the Cal/OSHA appeal, the DA’s review, or any other process plays out. None of those processes pause or extend that clock. If a claim potentially involves the U.S. Forest Service, the administrative claim generally needs to be presented on its own, shorter practical timeline — waiting until close to the state deadline to address a federal angle can foreclose it entirely.

What the Cal/OSHA File Means for Anyone Building a Case

Cal/OSHA’s citations are the product of its own investigation — inspection findings, interviews, and company records the agency had authority to compel that a private individual does not have starting from scratch. Closed investigative files like this are frequently accessible as public records once an agency’s process concludes, and they’re often among the most useful documents a family’s lawyer can obtain. If you were on that trip, are related to someone who wasn’t, or are simply trying to understand your options, the practical advice from February hasn’t changed: preserve trip documentation, communications, and your own account of what happened while memories are still sharp, and talk to a lawyer before giving a recorded statement to anyone’s insurer.

I handle wrongful death and catastrophic injury cases for Bay Area families, have recovered more than $25 million for clients, and work on a contingency fee basis — you pay nothing unless I recover money for you. If you have questions about this case or a similar one, I’m glad to talk it through at no charge.

Sources

This update draws on primary reporting and public records rather than secondhand summary. Key sources, for readers who want the underlying documents:

Frequently Asked Questions

Has anyone filed a lawsuit over the Castle Peak avalanche?

Not as of this writing, based on the public record. Six months after the February 17, 2026 avalanche, no civil wrongful death lawsuit against Blackbird Mountain Guides has been filed. That is not unusual for a case of this size — serious wrongful death claims are often built for months before a complaint is filed, and some resolve with an insurer without a lawsuit ever becoming necessary.

What did the April report find, and how is it different from the Cal/OSHA citations?

An independent investigation compiled through the Sierra Avalanche Center and published April 3, 2026 found that the group traveled through the runout zone of an avalanche path during a period when a slide was likely to very likely, and separately criticized the combined 15-person group’s size and spacing as inconsistent with accepted backcountry safety practice. Cal/OSHA’s later citations reached a similar conclusion about the terrain and went further, calling the failure to correct the hazard “willful.” Both are distinct from, and largely consistent with each other against, Blackbird Mountain Guides’ own account, discussed above.

What did Cal/OSHA find, and what does it mean?

On August 12, 2026, Cal/OSHA issued seven citations against Blackbird Mountain Guides totaling $151,300, including an $81,000 willful violation for failing to correct the hazard of traveling in avalanche terrain rated High danger, plus citations for inadequate training, hazard assessment, and safety equipment. A citation is a regulatory finding, not a court judgment, and the company is appealing — but it is independent evidence a future plaintiff would not otherwise have without months of expert work.

Does the Cal/OSHA fine affect a family’s ability to sue?

It doesn’t create a lawsuit by itself, but it can matter a great deal to one. A “willful” finding supports the argument that the company’s conduct went beyond ordinary negligence into gross negligence or recklessness — the standard needed to defeat a liability waiver in California. It’s the kind of third-party evidence plaintiffs’ lawyers usually have to build from scratch.

What is the deadline for filing a wrongful death claim over this avalanche?

Two years from the date of death under California Code of Civil Procedure section 335.1 — February 17, 2028, for this incident. That deadline is not affected by the Cal/OSHA appeal, the criminal investigation, or any other ongoing process. A claim that might involve the U.S. Forest Service can carry its own, separate administrative deadline that should be addressed well before then.

Can a liability waiver from a guided ski trip stop a lawsuit?

Not necessarily. Under California law, a waiver can protect a company against ordinary negligence, but it cannot protect against gross negligence or reckless conduct. Whether a specific waiver bars a specific claim depends on the facts — including, potentially, findings like Cal/OSHA’s willful-violation citation.

Has Blackbird Mountain Guides responded to the Cal/OSHA citations or disputed what happened?

Yes. On August 9, 2026 — three days before the citations were issued — the company released its own independent investigation, describing the terrain where the avalanche struck as low-angle and treed and attributing the group’s routing to being blocked by an impassable creek rather than a disregard for avalanche danger. It has also said its guides were properly certified in avalanche education, directly disputing Cal/OSHA’s training citation, and has stated it is appealing all seven citations.

Who could be held responsible besides Blackbird Mountain Guides?

That depends on facts that aren’t fully public yet. The Frog Lake huts sit on land privately owned and managed by the Truckee Donner Land Trust, which selects and oversees its partner guide companies, raising a possible claim theory separate from Blackbird Mountain Guides itself. A claim connected to the U.S. Forest Service, which permits travel across the surrounding national forest land, is a much harder path — federal land-management decisions are often protected by discretionary function immunity, and any such claim requires a separate administrative process.

Is the criminal investigation related to a possible civil lawsuit?

They’re related but separate. The Nevada County Sheriff’s Office has referred its findings to the district attorney for a decision on possible criminal charges, and none have been filed as of this writing. A civil wrongful death case does not have to wait for that decision — it runs on its own timeline and its own, lower burden of proof.

What should someone do who lost a family member or was injured on this trip?

Preserve trip documentation, communications, waivers, and your own written account of what happened while it’s fresh. Avoid giving a recorded statement to any insurance company before speaking with a lawyer. And keep the February 17, 2028 filing deadline in mind — it applies regardless of how the regulatory and criminal processes unfold.

Talk to a Lawyer About This Case

If you were on this trip, lost someone in it, or have questions about a similar guided-trip or backcountry accident, call me at (415) 851-4557 or email john@representmyinjury.com for a free, no-obligation consultation. I’ve recovered more than $25 million for Bay Area families and work on a contingency fee basis — you pay nothing unless I recover money for you. Read more about how I work or schedule a free consultation. I am bilingual in English and Spanish.

Si usted o un familiar resultó afectado por este u otro accidente durante una excursión guiada, llámeme al (415) 851-4557 para una consulta gratuita. Llevo estos casos directamente en español, sin intérprete. Vea mi página de lesiones personales en San Francisco.