South Tamil Nadu to witness intense rainfall till November 12; RMC monitors fresh weather system over Bay

RMC expects rainfall to pick up across the State from November 15. | Photo Credit: B. VELANKANNI RAJ The shift in the movement of the weather system near the Comorin area is likely to keep intense rainfall largely confined to southern and delta districts until November 12.Meanwhile, the Regional Meteorological Centre (RMC) expects rainfall activity to pick up across Tamil Nadu from November 15, with a fresh weather system likely to develop over the Bay of Bengal.The upper air cyclonic circulation over Comorin area and neighbourhood continues to influence wet spell across the State. However, a shift in its movement is likely to keep rainfall concentrated over coastal areas south of Cauvery delta region over the next few days, RMC officials said.According to the RMC, heavy rainfall is likely to occur at isolated places of Thoothukudi and Ramanathapuram on Tuesday. Various other delta and interior districts, including Thanjavur, Mayiladuthurai and Madurai, may receive moderate rainfall. This pattern is expected to continue till November 12. The weather agency is closely monitoring the development of fresh upper air cyclonic circulation over the southeast Bay of Bengal around November 13.V.R. Durai, Head, Regional Weather Forecasting Centre, RMC, said the weather models currently indicate that there is low probability of the system to intensify as a depression. But the rainfall distribution would depend on the track taken by the system.The RMC has forecast north Tamil Nadu districts too would be covered from November 15. Places like Chennai would experience light rainfall till Wednesday.During the past 24 hours ending 8.30 a.m. on Monday, Kayalpattinam in Thoothukudi district recorded the highest rainfall of 11 cm in the State.Though Chennai received rainfall on Sunday, it eased by evening. Calm winds and dip in temperature allowed Deepavali smoke to linger in the air till Monday morning, said Mr. Durai.Visibility improved only around 8.30 a.m. on Monday when northeasterly wind speeds increased from 5 kmph on Sunday night to 20 kmph around 8.30 a.m. on Monday, he added. Published - November 09, 2026 07:42 pm IST