By July 9, a weak low-level circulation was first detected, in association with a broad low pressure area.
On September 29, the disturbance developed a closed low-level atmospheric circulation.
Later in the month, the wave acquired a low-level circulation.
A cut-off low pressure area developed along the system and acquired a low-level circulation.
Later that day, a low-level circulation was discovered as the disturbance became increasingly organized.
On September 1, the cloud pattern became better organized, and a low-level circulation quickly developed.
Eventually, the system developed into a broad area of low pressure and acquired a low-level circulation.
The next morning, the depression became a tropical wave with no low-level circulation left.
Over the following day, a low-level circulation developed within the trough.
The following day, a low-level circulation developed and convective activity began to increase around the low.
