#chennai - more showers possible before 12am or into morning of 4-Dec.

RT @manibond32: @weatherofindia no rain in Salem (Tamilnadu) today. waiting (8:58pm)

RT @rajugana: @weatherofindia Bangalore 8.55pm, Cloud formation in the evening,  and drizzle experienced in some places. 

RT @joesat: severe and steady downpour at #palavakkam for 2hrs. No power @weatherofindia 8:40pm #chennai

RT @ntshamz2010: #chennai @weatherofindia pouring here in Selaiyur and neighbouring areas. whats the forecast?? (8:37pm)

RT @joesat: #chennai OMR flooded due to heavy rains for last 2hrs betwn srp tools and kandanchavadi. Autos pls avoid flooding (8:32pm)

#chennai - Heavy rains continue over Pallavaram zone .. non stop (8:36pm)

#chennai - Very heavy rain now 7:59pm over Pallavaram zone.

6:30pm, Showers has pushed inland into N.Tamilnadu.. more showers ahead for N.Tamilnadu coast,S.Andhra coast, #Chennai. http://ow.ly/i/1cgI1 

RT @thisismmk: @weatherofindia Heavy rains flooding the roads in Madipakkam, #chennai @ 6.40pm

RT @divakarchennai: @weatherofindia Heavy Rain at Palavakkam ECR!!!!! #chennai (7:06pm)

#chennai - Heavy rain continues over Pallavaram zone (7:18pm)

RT @dsanjeevkumar: @weatherofindia Heavy rains in #Chennai #Guindy Area.. at 6.30PM

#chennai - Steady sharp showers now (6:39pm) over Pallavaram zone

BB-12. the short lived system, has weakened, and on Monday afternoon, is  at 1007 mb, NE off Sri Lanka.

A trough runs through the Southern Peninsula .

NW  quadrant shows clouding and the winds are still at around 20 knts. Due to this, scattered showers along TN coast, with a few heavy in pockets, by Monday evening. 
The reflectivity image based on the dbZ, shows a sharp decline by Monday evening.  

The system will merge into the trough. While moving West, some precipitation in the Southern tip of India region and S.I. Karnataka.