Ep. 21 - Snow Immersion Suffocation

In this episode, we dive into one of the most overlooked but deadly hazards in deep powder skiing: snow immersion suffocation (NARSID). Unlike avalanches, snow immersion deaths happen silently—often within feet of a groomed run—when skiers and snowboarders fall into deep snow or tree wells and become trapped. We explore the research behind these incidents, where and how they occur, who is most at risk, and the tragic mechanics of asphyxiation in deep snow. Using studies from Van Tilburg, Baugher, and Cadman, we break down ra eal survival story, discuss prevention strategies, and how both bystanders and professional rescuers should respond. Whether you’re a backcountry adventurer, resort skier, or ski patroller, this episode will change the way you think about deep snow safety. Stay aware, ski with a partner, and stay out of tree wells.

Must Watch: GoPro Awards: Tree Well Rescue

Citations

Baugher, P. (2006). Risk trends at U.S. and British Columbia ski areas: An evaluation of the risk of snow immersion versus avalanche burials. In Proceedings of the 2006 International Snow Science Workshop (pp. 584–591). International Snow Science Workshop.
URL: https://arc.lib.montana.edu/snow-science/item/2076

Cadman, R. (1999). Eight nonavalanche snow-immersion deaths: A 6-year series from British Columbia ski areas. The Physician and Sportsmedicine, 27(13), 31–43.
URL: (No publicly available link found—may be available through institutional access)

Van Tilburg, C. (2010). Non–avalanche-related snow immersion deaths: Tree well and deep snow immersion asphyxiation. Wilderness & Environmental Medicine, 21(3), 257–261.
URL: https://doi.org/10.1016/j.wem.2010.04.004

Van Tilburg, C. S., Grissom, C. K., Zafren, K., McIntosh, S. E., Radwin, M. I., Paal, P., et al. (2017). Wilderness Medical Society practice guidelines for the prevention and management of avalanche and non-avalanche snow burial accidents. Wilderness & Environmental Medicine, 28(1), 23–42.
URL: https://doi.org/10.1016/j.wem.2016.10.001

Chapters
00:00 Introduction: The Hidden Dangers of Snow Immersion
00:37 Understanding Snow Immersion Suffocation
02:58 Historical Context and Research
03:09 Where and How Snow Immersion Happens
04:54 Mechanics of Snow Immersion Traps
06:23 Risk Factors and Victim Profiles
09:27 Prevention and Safety Measures
11:48 Rescue Techniques and Immediate Response
13:34 Professional Rescuer Guidelines
16:12 Advanced Medical Care and Resuscitation
20:11 Conclusion and Final Thoughts

As always, thanks for listening to Wilderness Medicine Updates, hosted by Patrick Fink MD FAWM.

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