Active tsunami warnings
All clear - no active tsunami warning for Japan
We monitor GDACS and the US National Weather Service continuously and will show any new alert here the moment it is issued. Get instant tsunami alerts with the QuakeMate app.
Japan sits on or near the Pacific/Indian Ocean subduction zones, where large undersea earthquakes can generate tsunamis. It is covered by the Pacific Tsunami Warning Center and regional warning systems. The strongest recent earthquake near Japan was M 6.9 near NEAR EAST COAST OF HONSHU, JAPAN.
Use this page to check whether there is a tsunami warning in Japan today, see the current tsunami risk and recent offshore earthquakes, and understand what to do if a warning is issued. For instant tsunami and earthquake alerts in Japan the moment they happen, the free QuakeMate tsunami & earthquake alert app sends real-time push notifications.
Tsunami alert levels
Dangerous coastal flooding and powerful currents likely. Move to high ground or inland now.
A tsunami is possible. Stay alert and be ready to act.
Strong currents or waves dangerous near the water. Stay away from the coast.
Tsunamis in Japan: FAQ
Is there a tsunami warning in Japan right now?
There is no active tsunami warning being tracked for Japan right now. This page updates automatically from GDACS and the US NWS.
Can earthquakes near Japan cause a tsunami?
Japan sits on or near the Pacific/Indian Ocean subduction zones, where large undersea earthquakes can generate tsunamis. It is covered by the Pacific Tsunami Warning Center and regional warning systems. Large, shallow offshore earthquakes (roughly M7+) are the main tsunami trigger.
Has there been a tsunami in Japan?
Japan sits on or near the Pacific/Indian Ocean subduction zones, where large undersea earthquakes can generate tsunamis. It is covered by the Pacific Tsunami Warning Center and regional warning systems. Historically, tsunamis have affected this region after major offshore earthquakes. This page tracks the live alert status and recent offshore quakes so you can see current tsunami risk for Japan.
What should I do during a tsunami warning in Japan?
If a tsunami warning is issued for Japan, move immediately to high ground or far inland, away from the coast, rivers and harbours, and follow official local guidance - do not wait to see the wave. The QuakeMate app can alert you the moment a warning is issued near you.
Where do tsunami warnings for Japan come from?
QuakeMate aggregates the Pacific Tsunami Warning Center, the US National Tsunami Warning Center, and the global GDACS system. Local agencies issue the official guidance.
Is there a tsunami alert app for Japan?
Yes. QuakeMate is a free iOS app that sends real-time tsunami warnings and major-earthquake alerts for Japan, with a live map of offshore activity. Download it at quakemate.app/download.
Other hazards in Japan
Tsunami & earthquake alerts for Japan
QuakeMate sends real-time alerts for major earthquakes and tsunami warnings near you - free on iOS.