Avalanche Incidents in NZ | 1998 - 2023
25 Years of Insights
Avalanches are an ever-present danger in the alpine backcountry. Each year thousands of people participate in backcountry snow sport activities across NZ, either consciously or unconsciously exposing themselves to the danger of avalanches.
We’re excited to share the latest findings from our comprehensive analysis of avalanche incidents in New Zealand, spanning 25 years of data collection (1998–2023). This in-depth review examines the key factors associated with avalanche incidents and fatalities, providing critical insights to enhance safety and decision-making in the backcountry.
What Makes This Study Significant?
Our analysis draws on decades of incident data, creating one of the most complete and detailed datasets on avalanches in Aotearoa. By identifying key patterns and trends, this study provides evidence-based insights to help recreationists, backcountry users, and avalanche professionals better understand and mitigate risks.
Key Findings at a Glance
From 1998 to 2023, there were 798 reported avalanche incidents in New Zealand, including 27 fatalities.
Where & When?
- The highest portion of incidents occur in the Queenstown region
- Incidents are most common during winter and early spring, most notably in September.
- Avalanches with human involvement are most common on southeasterly aspects at elevations between 1750–2000m.
Key characteristics?
- Incidents predominantly involve size 1–2 slab avalanches, with wind slabs being the most common culprit.
- Most avalanches associated with an incident are triggered accidentally by backcountry skiers.
- Recreational incidents are most common when the NZAA Danger Rating is ‘Moderate’—a reminder that even at moderate, human triggered avalanches can and do occur.
Who’s Involved?
- The majority of incidents involve males aged 26–35.
Why This Matters
These findings emphasize the ongoing need for avalanche education, awareness, and preparedness in New Zealand’s alpine backcountry. While participation in snow sports grows, understanding the conditions, patterns, and contributing factors behind avalanche incidents can significantly reduce the likelihood of future events.
Explore the Full Analysis
For the full report and deeper insights into 25 years of avalanche incidents, visit:
https://www.avalanche.net.nz/education/research-and-resources/avalanche-incidents-in-nz
MSC will continue to update this data on a regular basis.