There has been Nankai trough mega quakes before , what’s different is this seems to be the first time they understand the fault line well enough to make a predi

There has been Nankai trough mega quakes before , what’s different is this seems to be the first time they understand the fault line well enough to make a prediction and provide warnings about future quakes. The title makes it sound like this would be the first Nankai trough in quake.