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Preliminary Report Explains Route in Deadly Tahoe Avalanche but Leaves Key Questions Open

The 68-page independent analysis clarifies what happened on the mountain and signals possible legal and investigative next steps.

Overview

  • An avalanche near Perry Peak buried a backcountry ski party and killed nine people, including three guides, after the group left their Frog Lake huts during a major winter storm on Feb. 17.
  • Blackbird Mountain Guides released a 68-page preliminary report by Don Sharaf that reconstructs GPS tracks, shows repeated failed attempts to cross a normally snow-covered creek, and maps the route that put the party in an avalanche runout zone.
  • The report found tight group spacing and limited escape options in runout terrain and said vegetation and creekbank conditions likely prevented the group from reaching safer ground.
  • Sharaf’s analysis does not determine whether the slide was naturally triggered or triggered by the group and assigns no explicit blame to the guide company, while Nevada County investigators have completed a negligence review that has been sent to prosecutors and the official probe remains open.
  • The storm deposited more than two feet of snow and left open water and steep creek banks where a winter snow bridge normally forms, and the report notes a bypass route existed but would have required crossing private land that guides typically avoid.