CAIC: Colorado Avalanche Information Center

2024/05/10 - Idaho - Donaldson Peak, Lost River Range

Published 2024/05/11 by Scott Savage and Ethan Greene - Sawtooth Avalanche Center and Colorado Avalanche Information Center

Avalanche Details

  • Location: Donaldson Peak, Lost River Range
  • State: Idaho
  • Date: 2024/05/10
  • Time: 11:55 AM (Estimated)
  • Summary Description: One backcountry skier caught, buried, and killed
  • Primary Activity: Backcountry Tourer
  • Primary Travel Mode: Ski


  • Caught: 1
  • Fully Buried: 1
  • Injured: 0
  • Killed: 1


  • Type: U
  • Trigger: AF - Foot penetration
  • Trigger (subcode): u - An unintentional release
  • Size - Relative to Path: --
  • Size - Destructive Force: --
  • Sliding Surface: --


  • Slope Aspect: SE
  • Site Elevation: 11600 ft
  • Slope Angle: --
  • Slope Characteristic: --

Accident Summary

PRELIMINARY REPORT: On Friday May 10, two experienced backcountry skiers were traveling on Donaldson Peak in Idaho’s Lost River Range. While downclimbing to their ski descent, Skier 1 triggered and was caught in a small wind slab avalanche. The slide carried Skier 1 downhill, triggering a second and larger avalanche. Skier 2 used a satellite communication device to call for help before descending the avalanche path. She located Skier 1 with her rescue transceiver and probe pole. Skier 1 was buried under at least 5 feet of snow. She dug Skier 1 out of the snow with her shovel and began CPR. Search and rescue teams responded and evacuated Skier 1, but he did not survive the accident.