Heavy spell of N-E monsoon ahead for Tamilnadu starting from today evening

Heavy spell of N-E monsoon ahead for Tamilnadu starting from today evening.
T showers for S,S-tip Tamilnadu.. http://ow.ly/i/7wdZz 
Due to easterly trough... T showers expected for N-E Andhra and into S Chatisgarh, S,S-W Odisha on today afternoon.

Meanwhile the circulation over S-E Bay will become well marked LOW by evening of Monday.
This system over S-E Bay is already tracked as 99W.
Pressure around 1007mb... http://ow.ly/i/7we9N 
By monday night, the S-E Bay system 99W is expected to move fast upto South Bay ... http://ow.ly/i/7wecW 
Latest GFS model does not support the formation of Cyclone from 99W.

99W is expected to become a Depression before nearing central Tamilnadu coast on Tuesday evening.
From evening of Tuesday, showers expected to push along central, N coast Tamilnadu and into Chennai.
HEAVY widespread rain along N,central coast Tamilnadu, Chennai expected on 12-Nov, Wednesday !

11:30pm, IR shows the convective activity around S-E Bay system 99W ... http://ow.ly/i/7weua