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:
https://eew.j1fm.tokyo/?e=20210320180954
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.