Volcanoes and their potential impact on Palmerston North

Learn more about volcanic hazards in the Central Plateau and how they could affect Palmerston North. 

The Central Plateau of New Zealand, particularly the Ruapehu District, is home to three frequently active cone volcanoes: Mount Ruapehu, Mount Tongariro and Mount Ngauruhoe.

These volcanoes are part of the Volcanic Plateau and represent significant natural features, posing various risks to communities within and beyond their immediate surroundings. Additionally, the region is downwind of the Taranaki volcanic complex, which means volcanic ash from Mount Taranaki can also potentially affect our area.

While not directly near active volcanoes, our city faces risks from ashfall and may serve as a refuge during evacuations.

Know how to protect your home and family during a volcanic event

Handy links to find out more about volcanoes

Check out the Department of Conservation’s website to learn more about volcanic hazards in Tongariro National Park

For more information about staying safe during an eruption, visit the Get Ready website

For detailed infographics and posters about volcanic processes, visit the Taranaki Emergency Management website

Volcanic hazards and ashfall risk in Palmerston North 

While Palmerston North itself lies outside the Ruapehu and Taranaki districts, we are not immune to the impacts of volcanic eruptions, particularly ashfall. 

During a moderate-sized eruption, volcanic ash from Mt Ruapehu, Tongariro, or Ngauruhoe could travel great distances, potentially depositing up to 100mm of ash in the northern part of the Manawatū-Whanganui Region. 

Though our city is not in immediate proximity to these active volcanoes, wind-blown ash and smoke could still pose significant hazards even in small amounts, including:

• reduced air quality, causing respiratory or health issues
• disruptions to road, air, and rail travel
• damage to buildings, power lines, and electronic systems
• contamination of water supplies.

Emergency preparedness and evacuations

Palmerston North plays a critical role in a regional emergency response. In the event of a significant volcanic eruption in the Central Plateau or Taranaki, neighbouring communities might face large-scale evacuations. Palmerston North could become a key resource hub and refuge for displaced individuals. It is essential that residents and local authorities remain prepared to support those affected.

How to stay safe during volcanic events

Here are key actions you can take to prepare for and respond to volcanic hazards:

1. Stay informed: Monitor Civil Defence alerts, social media updates, and emergency broadcasts.
2. Prepare an emergency kit: Include masks, goggles, essential medications, and a battery-powered radio to stay informed in case of ashfall.
3. Protect your home: Close windows, doors, and ventilation systems to keep ash out.
4. Be cautious when travelling: Avoid driving unless necessary, as volcanic ash can make roads slippery and reduce visibility.

By staying prepared, we can reduce the risks posed by volcanic hazards to our community.