There is quite a confusion over the actual position of the depression over Bay of Bengal with two different agencies providing two different locations for the same time. The difference in position between IMD and JTWC is apart by more than 150 kms.
This difference in the location of the system is creating two different tracks and potential landfall points as well
While JTWC expects a Westerly track with a landfall close to Chennai
IMD expects a NW track and possible dissipation over open seas
But the truth is there is hardly anything decent left in the system to give decent rains across a wide area as it comes closer to land. A classic case of One Weeks Rainfall opportunity lost for Tamil Nadu during its peak NEM season.