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Ngā Rū Whenua Earthquakes

Earthquakes are caused by ruptures along faults in the earth's surface, resulting in shaking and ground acceleration as energy is released. 

Tectonic plates are constantly being pushed together at a steady rate. As they rub against each other, the rocks along the boundary become more and more stressed until the pressure is released suddenly and unexpectedly.

Each year, more than 15,000 earthquakes are recorded in New Zealand, but only around 100 - 150 are strong enough to be felt. 

Earthquakes can trigger other hazards, like landslides, land deformations, liquefaction, avalanches, flash floods from dam bursts, fires and tsunami.

While we can’t predict when an earthquake will happen, you can reduce your risk by knowing what to do before, during and after an earthquake.

Get ready for earthquakes

There are simple steps that you, your family and workplace can do to be prepared for earthquakes.

Here are four easy things you can do to get ready:

  • Move heavy items and books to lower shelves.
  • Get hooks for your art and pictures (single nails won’t stay secure).
  • Stick fragile objects to surfaces.
  • Identify places in each room to drop, cover, hold.

What you need to know

Get ready for all types of emergencies

Get Ready

Earthquake activity in Manawatū-Whanganui

The Manawatū-Whanganui Region contains a number of active faults that have the potential to cause significant impacts across the social, built, economic and natural environments. Some faults outside of the region also have the potential to significantly impact the region (for example, the Hikurangi Subduction zone).

Of all the identified regional hazards, earthquakes pose the highest risk to our region's critical infrastructure. It is estimated that almost all critical infrastructure services in the region are expected to suffer some level of damage in a 1 in 2,500 year earthquake event scenario. A detailed analysis of such an event is available in our 2024 lifeline infrastructure vulnerability study (available on request).

Other faults located either partially or completely outside the region, such as the Hikurangi Subduction zone and the Wellington Fault, also have the potential to significantly impact the region. You can read more about these faults and how they would impact our region in greater detail in our 2025 CDEM Group Plan (please note this document is currently in draft form).

Check out the following resources to find out more about faults which can affect our region, including how often we can expect them to rupture: