Complex sentence: On 16 February, RSMC Nadi and TCWC Wellington reported that Cyclone Jasmine had degenerated into an extratropical cyclone, over the next couple of days Jasmine's remnants were tracked by TCWC Wellington, as it continued to move towards the southeast.
Split into simpler sentences: On 16 February, RSMC Nadi and TCWC Wellington reported that Cyclone Jasmine had degenerated into an extratropical cyclone. However, over the next few days, Jasmine's remnants were tracked by TCWC Wellington, as the storm continued to move toward the southeast.