Schools in Chennai, Tiruvallur, Kancheepuram and Chengalpattu were declared closed on Wednesday as heavy rain affected northern Tamil Nadu.
The Regional Meteorological Centre forecast heavy to very heavy rainfall at isolated places over the next 48 hours, with a low-pressure area likely to form over the southwest Bay of Bengal.
The Greater Chennai Corporation is carrying out road repairs worth Rs 21.80 crore and distributed 6,000 food packets to rain-affected people in Virugambakkam.