01B - is still hovering over N Srilanka and adjoining S-W Bay ... http://ow.ly/i/4dcDN 
8:30pm, Showers seen over N,N-E,N-central Srilanka and into North Gulf of Mannar ... http://ow.ly/i/4dcHg 
01B is a Well marked LOW.
01B is expected to weaken even more and push S-W into Gulf Mannar in next 18hrs.

After this 01B, another easterly wave is expected to push in and expected to reach Tamilnadu coast on 13/14-Jan.

Today morning low temp over North India was recorded at Amristar (Punjab) = 1 C.

Today evening the Moisture left from W.D trough has drifted away into East,N-E India and into Bangladesh... http://ow.ly/i/4dcqE 
Next, strong W.D system is expected to reach N,N-W India on 8-Jan.... http://ow.ly/i/4dcvD 

01B - Now a well marked LOW, Heavy rain over N tip of Srilanka.

1:30pm, 01B - Visible shows Heavy convective activity over N. Srilanka and along S-E Tamilnadu coast ... http://ow.ly/i/4d1Gz 
01B - as of now is drastically weakened into a Depression or a Well marked LOW, lying along N tip of Srilanka.
01B - is expected to further drift S-W into Gulf Mannar during next 24 hrs as a Well marked LOW ... http://ow.ly/i/4d1Mb 

Models continue to forecast, HEAVY and scattered rain for S Tamilnadu (Tuticorin, Tirunelveli and Kanyakumari districts) from tonight.
HEAVY rain warning for Kanyakumari district of Tamilnadu on tonight, Tuesday and wednesday ... http://ow.ly/i/4d1SM 

Kolkata - 1pm, "Gloomy weather, seems rains on the corner by evening.
temp under check big time , its just 22 C with 15 km/h winds from NNW"

01B - Deep Depression with less rain !!

12am, Satellite IR shows convective activity over N-W quadrant, very near to N Srilanka tip and some light showers also seen pushing into central,  S-E Tamilnadu coast as well.

Position is now around 9.1N , 81.2 E
ADT analysed pressure around 1008 mb.
US Navy suggests pressure around 996mb.
Winds gusting to 60/70 kmph.

Latest microwave imagery suggests that exposed center of system is slowly degrading... suggesting rapid dissipation of the system.
Still HEAVY rain expected for S-E coast, S,S-central Tamilnadu from evening of today (Monday).
Scattered HEAVY rain is still forecast for Kanyakumari, Tuticorin, Tirunelveli districts of Tamilnadu on Monday night, Tuesday and into Wednesday.
NO rain expected for N,N-coast Tamilnadu and #Chennai.