NE monsoon is near for Tamilnadu coast ! When ? Sunday, 20-Oct ?

Today, the low,mid level circulation over S,S-W Bay persists ... presently an elongated one ... http://ow.ly/i/3rU4j 
The strong Anti-cyclone over S Rajasthan zone persists and will do so during next 3 days ... http://ow.ly/i/3rU4j

GFS suggests, present S Bay circulation is expected to consolidate and track W-N-W towards Central Tamilnadu in 2days http://ow.ly/i/3rUcl 

GFS models suggest a central Tamilnadu coast landfall as a Depression on Monday, 21-Oct.. http://ow.ly/i/3rUlz 
NCMRWF model suggests a near #Chennai landfall as Depression on Monday, 21-Oct ... http://ow.ly/i/3rUrX 

All together, N-E Monsoon is expected to start with a BanG over #Chennai and most of Tamilnadu coast on Sunday / Monday.
Due to this S Bay circulation, Heavy rain expected for W-Ghats of Kerala, W,N-W,S Tamilnadu during next 24hrs .. http://ow.ly/i/3rUBE 
From tomorrow, 18-Oct, scattered "Monsoon type" showers expected to push into land from Sea along #Chennai, N,central Tamilnadu coast.

If the present S Bay circulation materializes as a Depression by Saturday, then HEAVY rain ahead for Tamilnadu coast, #Chennai from Sunday !
HEAVY widespread rain expected to push into central,S-E,N coast Tamilnadu, #Chennai and S Andhra coast on 21-Oct.. http://ow.ly/i/3rVvy