New Avalanche Incident Analysis: 25 Years of Insights
NZ Mountain Safety Council (MSC) is excited to share the latest findings from our comprehensive analysis of avalanche incidents in New Zealand, spanning 25 years (1998–2023). The Avalanche Incidents in New Zealand report is an ongoing, in-depth review of 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, including 27 fatalities.
- Most incidents were in the Queenstown region.
- Incidents were most common during winter and early spring, most notably in September.
- Avalanches were most common on southeasterly aspects at elevations between 1,750–2,000m.
- Incidents predominantly involved size 1–2 slab avalanches, with wind slabs most common.
- Most avalanches resulting in an incident were triggered accidentally by backcountry skiers.
- Recreational incidents were most common when the NZAA Danger Rating was ‘Moderate’—a reminder that even at this rating, human-triggered avalanches can and do occur.
- Most incidents involved males aged 26–35.
Why These Findings Matter
These findings emphasise 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:
Avalanche Incidents in New Zealand
MSC will continue to update this data on a regular basis.