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: