When an earthquake occurs, the Japan Meteorological Agency (JMA) estimates the possibility of tsunami generation from seismic observation data. If disastrous waves are expected in coastal regions, JMA issues a Tsunami Warning/Advisory for each region expected to be affected based on estimated tsunami heights. JMA also issues information on tsunami details such as estimated arrival times and heights.  Flow of issuance of information about tsunami and earthquake Explanation about Tsunami Warning/Advisory and Tsunami Information Tsunami flags Videos Educational video on tsunami safety.
Contact details for inquiries: Office of International Affairs Japan Meteorological Agency Phone: +81-3-3584-8603 E-mail:  Brochures and Leaflets |
Escape the Tsunami! (17 min.)