The system subsequently rapidly weakened and became an extratropical cyclone during December 1, before they were absorbed by an advancing trough of low pressure near 50 ° S on December 4.
The system subsequently rapidly weakened and became an extratropical cyclone during December 1. Sina's remnants subsequently maintained its south-eastwards track, before they were absorbed by an advancing trough of low pressure near 50 ° S on December 4.