This is looking serious for the south east. At this stage landfall is around Cheng Gong but could easily duck in for a direct hit on Taitung city or Dulan.

Travelling speed is also a slight concern - it's not snail's pace but it's not moving fast either. Not till after landfall.

The other worry is the approach - coming up that angle it's going to feed a lot of rain into Taitung even before it gets there.