Complex sentence: Over the next two days the system moved towards the north-northwest and slowly consolidated, as atmospheric convection wrapped into the systems low level circulation center, before RSMC Nadi reported during March 9, that the system had developed into a tropical depression.
Split into simpler sentences: Over the next two days the system moved towards the north-northwest and slowly consolidated, as atmospheric convection wrapped into the systems low level circulation center. Early on March 9, RSMC Nadi reported that the system had developed into a tropical depression.