However, a deep depression on the Bay of Bengal that caused widespread rain in the state since Sunday morning will not intensify into a cyclonic storm, a weatherman said.
The deep depression would make landfall between Puducherry and Chidambaram on Monday afternoon, said regional meteorological centre deputy director general SB Thampi. However, it would not bring very heavy rainfall, he added.
Interior parts of Tamil Nadu would get light and widespread rain while coastal parts would receive moderate rain in the next 24 hours, he added.
Nungambakkam recorded 4cm rainfall and Meenambakkam recorded 2.7cm in three hours since 8.30am on Monday.
Meanwhile, rain disrupted train services on the Tambaram Beach suburban line in Chennai on Monday morning. Tracks were submerged in water in some places between Tambaram and Pallavaram stations, forcing the railways to suspend services between the stations at 7am.
Trains were also delayed after a tree fell on tracks near Park railway station on the same route around 9am. Incoming express trains were delayed by almost two hours.