The Guide to Earthquakes & Tsunamis in Vanuatu

Vanuatu is located within the Pacific Ring of Fire and sits along the New Hebrides Trench, one of the most seismically active zones in the South Pacific. According to ThinkHazard.org, earthquake hazard in Vanuatu is classified as high, with more than a 20% chance of potentially damaging earthquake shaking occurring within the next 50 years.

Many earthquakes affecting Vanuatu occur offshore along the trench system, beneath the ocean floor. Because of this, the country faces not only strong ground shaking but also an elevated risk of tsunamis, particularly for coastal communities and low-lying islands.

Tsunamis are a major natural hazard in Vanuatu, most often triggered by offshore earthquakes, though undersea landslides and volcanic activity can also generate dangerous waves.

Vanuatu has a long history of tsunami events, with records dating back to the 19th century. The country sits in a highly active seismic zone, and tsunami hazard is classified as high, with a greater than 40% chance of a potentially damaging tsunami occurring within the next 50 years.

Because many communities are located along low-lying coastlines, tsunamis pose a serious risk, particularly as rising sea levels linked to climate change may increase the areas exposed to inundation in the future.

How to Prepare for a Tsunami in Vanuatu

Vanuatu operates tsunami monitoring and warning systems through regional and national agencies, with alerts broadcast via radio and official channels. Even so, travellers should take extra precautions:

• Pay attention to local advisories issued by the Vanuatu Meteorology and Geo-Hazards Department
• Familiarise yourself with tsunami evacuation routes where you are staying and note evacuation signage in coastal areas
• Monitor radio, television and official online updates for tsunami warnings and safety instructions

What to Do if a Tsunami Warning is Issued

Tsunami warnings can be issued through news media in the South Pacific. Other signs of a tsunami could be a strong earthquake, seeing the ocean recede and/or hearing unusual roaring sounds from the ocean. If any of these signs occur, follow the steps:

• If you see signs of a tsunami before a tsunami warning is issued, act immediately
• If you’re on the coast, move inland and to higher ground immediately
• Head to areas as advised on tsunami evacuation maps and or follow tsunami evacuation signage.

After a tsunami, continue listening to the media for announcements. Only move back into the affected areas when authorities have said it is safe to do so.

Now that you know about natural disasters in Vanuatu, here are the answers to the internet's frequently asked questions about earthquakes, tsunamis and natural disasters in Vanuatu!

Are earthquakes common in Vanuatu?

Yes, earthquakes are very common in Vanuatu as the country sits on the Pacific Ring of Fire where multiple tectonic plates meet. The islands experience hundreds of small earthquakes each year, with larger ones occurring regularly due to the active volcanic and seismic activity in the region.

What is the risk of tsunamis in Vanuatu?

Vanuatu faces a moderate to high tsunami risk due to its location in the seismically active Pacific region. Tsunamis can be triggered by underwater earthquakes, volcanic eruptions or landslides, and the country's extensive coastline makes it particularly vulnerable to these ocean waves.

When was the last major earthquake in Vanuatu?

Major earthquakes occur regularly in Vanuatu, with significant events happening every few years. The most recent major earthquake will depend on when you're reading this, but the country typically experiences earthquakes of magnitude 6.0 or higher several times per year.

How do I prepare for natural disasters in Vanuatu?

Preparation for natural disasters in Vanuatu includes having an emergency kit with water, food, first aid supplies and a battery-powered radio. Stay informed about local warning systems, know evacuation routes, and register with your embassy if you're visiting. Hotels and resorts typically have emergency procedures in place.

Are there volcano risks in Vanuatu?

Yes, Vanuatu has several active volcanoes, with Mount Yasur on Tanna Island being one of the world's most accessible active volcanoes. While volcanic activity is monitored closely, eruptions can occur with little warning. The Vanuatu Geohazards Observatory provides regular updates on volcanic activity levels.

What should I do during an earthquake in Vanuatu?

During an earthquake in Vanuatu, immediately drop to your hands and knees, take cover under a sturdy desk or table, and hold on until the shaking stops. If you're near the coast, move to higher ground immediately after the shaking ends due to potential tsunami risk. Avoid doorways and windows, and stay away from heavy objects that could fall.