J1 tsunami tracking

The Japan tsunami tracking system was completely rebuilt and deployed using the JMA XML interface.

A program runs once per minute to get tsunami related updates from the XML feed.

A public view of the data is available on the eew.j1fm.tokyo website by bringing up the the JMA final quake data. 

Tsunami data from the Mar 20, 2021 6:09 PM (JST) earthquake is already loaded in the system at:


No tsunami data from prior to Mar 20, 2021 is available, nor is there a project plan to retreive it.

OnAir and on-site signalling will be added at a future time.

After posting, we created a new table of the romanized versions of all of the shore monitoring station names based on data from the JMA, and implemented that into the eew.j1fm.tokyo presentation.



Monday, March 22, 2021
Systems affected: 
J1 Earthquake Site
Issue type: