Preparing for the Nankai Trough Earthquake: A Guide for Tourists

Japan is renowned for its natural beauty, rich culture, and warm hospitality. However, the country is also one of the most seismically active regions in the world. If you’re planning a visit to Japan, especially to areas along the Pacific coast, it’s important to be aware of the Nankai Trough earthquake—one of the most significant seismic threats facing the country.

In this guide, we’ll explore what the Nankai Trough earthquake is, why it’s a concern, and how you, as a tourist, can prepare to stay safe during your visit.

Recently, the Japanese Meteorological Agency (JMA) issued an advisory for the potential of a Nankai Trough Earthquake after a 7.1 earthquake hit the Japanese southwest coast last week. And while the advisory has since been lifted, it doesn’t mean the danger is over, let’s learn a little bit more about the Nankai Trough, the earthquakes it can produce, and what a visitor (or resident) should do to be prepared in case it happens.

What is the Nankai Trough Earthquake?

The Nankai Trough is a deep underwater trench located off the southern coast of Japan, stretching from the Tokai region near Shizuoka Prefecture down to Kyushu. This trough marks the boundary where the Philippine Sea Plate is subducting beneath the Eurasian Plate. Over centuries, this subduction zone has accumulated a significant amount of stress, which is periodically released in the form of massive earthquakes known as Nankai Trough earthquakes.

These earthquakes occur roughly every 90 to 150 years, with the most recent one happening in 1946. Experts predict that another major earthquake could strike within the next few decades, making preparedness crucial. Even for a country that faces the threat of earthquakes all the time, the Nankai is a different level of risk.

The Potential Impact

A Nankai Trough earthquake could be devastating if and when it does hit Japan. The seismic event could trigger tsunamis, landslides, and widespread damage to infrastructure. Coastal areas, including popular tourist destinations like Osaka, Kyoto, Nagoya, and even as far away as Tokyo, are at particular risk.

For reference, the Tohoku Earthquake that hit in 2011 caused billions in damage and claimed the lives of over 19,000 people. The Nankai earthquake, however, could cause up to 10 times more in damages and claims well over 300,000 lives at the same time.

The Japanese government and various organizations have invested heavily in disaster preparedness, ensuring that buildings are earthquake-resistant, emergency services are well-coordinated, and early warning systems are in place. However, as a visitor, you should also take proactive steps to ensure your safety.

How Tourists Can Prepare

Stay Informed

Before your trip, familiarize yourself with the regions that could be affected by the Nankai Trough earthquake. Stay updated on any seismic activity or warnings from reliable sources, such as the Japan Meteorological Agency (JMA) or local news outlets.

Download Emergency Apps

Japan has several useful apps that provide real-time information on earthquakes, tsunamis, and other emergencies. “Yurekuru Call” and “Japan Shelter Guide” are two popular apps that offer alerts and information in English.

Know Evacuation Routes

When you arrive at your accommodation, take note of the nearest evacuation routes and emergency exits. Hotels in Japan often provide this information in guest rooms, and you can also ask the front desk for guidance. Don’t hesitate to email the hotel before you visit to get this information before your departure.

Prepare a Small Emergency Kit

Carry a small emergency kit with essentials like a flashlight, bottled water, a whistle, a portable charger, first aid kit, and a map. While most hotels and public buildings in Japan are equipped with emergency supplies, having your own kit can be a valuable backup. You can easily get these items at most stores in Japan and are a smart idea to carry with you at all times.

Learn Basic Safety Protocols

In the event of an earthquake, remember to “Drop, Cover, and Hold On.” If you’re indoors, take cover under a sturdy piece of furniture or against an interior wall, away from windows. If you’re near the coast and feel strong shaking, immediately move to higher ground to avoid potential tsunamis.

Stay Calm and Follow Instructions

Japan is known for its orderly and well-coordinated response to emergencies. In the event of an earthquake, follow the instructions of local authorities and emergency personnel. Evacuation centers are set up in safe locations, and you’ll be guided to them if necessary.

It is also a good idea to know where US embassies and consulates are located in Japan as well. Use the State Department website to locate the closest to you when you travel to Japan.

Conclusion

While the Nankai Trough earthquake is a significant concern, Japan’s commitment to disaster preparedness ensures that both residents and visitors have the tools and information needed to stay safe. By taking a few simple precautions, you can enjoy your trip with peace of mind, knowing that you’re prepared for any situation.

Remember, being informed and prepared is the key to a safe and enjoyable visit to Japan. Whether you’re exploring ancient temples, enjoying the cherry blossoms, or savoring delicious cuisine, a little preparedness goes a long way in ensuring your safety in this beautiful and resilient country.