This comes at a time when Chennai has been facing a historic water crisis forcing the TN government to bring potable water though train.
Southern Coastal regions and certain areas in the delta regions are expected to get heavy rains over the next 24 hours.
The move comes even as the leader of Opposition and former Chennai Corporation Mayor, M K Stalin demanded a DVAC probe into the discrepancies surrounding the tender process.
As moderate rainfall persisted in the city for the second day on Thursday, many arterial roads fell prey to water stagnation.
Moderate rain or thundershower was also likely to occur at most places over North TN and Puducherry and light to moderate rain or thundershowers were likely at a few places over South TN.
With Wednesday's rain of 100 mm, Chennai has got 350 mm rain of the total 850 mm rainfall for the season, said the TN Weatherman.
Rains have already begun to lash the eastern and central parts of the State with Chennai, Kancheepuram, Tiruvallur and Villupuram among the districts that experienced rainfall.
Rains on Wednesday and Thursday will seal the fate of Chennai. With 61 per cent deficit, the city is staring at a potential monsoon failure.
According to Metro Water data as of Monday, combined levels of the three tanks stands at 599Mcft against their total capacity of 7957Mcft.
The districts of Cuddalore, Villupuram, Ngapattinam, Pudukottai, Thiruvarur, Tirunelveli, Thoothukudi and Kanyakumari, which are predicted to bear the brunt of the cyclone.
When everyone thought 'Gaja' was drifting down south, the storm took a U-turn on Tuesday morning and headed northwest, but again travelled west-southwestwards.
State highways department to provide additional vents to existing culverts in 18 locations, Tambaram-Velachery Road, Mudichur to expect less water stagnation.
Pradeep John aka Tamil Nadu Weatherman has come up with weather updates one can expect on the day of Diwali in Tamil Nadu.
Mobile service providers to have been asked by the state government to shift their towers to a raised platform as India Meteorological Department has issued a rain alert in Tamil Nadu.
The Indian Meteorological Department told media that there was no likelihood of a tsunami forming due to Cyclone Ockhi in the Bay of Bengal region, dispelling fake news alerts and rumours on WhatsApp.