The IMD forecasts heavy to very heavy rainfall in coastal Tamil Nadu and Puducherry on November 27, with isolated areas receiving extremely heavy rainfall. The downpour is likely to persist from November 28 to 30,

A total of 17 disaster response teams, comprising NDRF and state personnel, have been dispatched to vulnerable areas such as Chennai, Mayiladuthurai, Nagapattinam, Cuddalore and Thanjavur districts.

The India Meteorological Department (IMD) issued a warning that a deep depression over the Bay of Bengal is likely to intensify into Cyclone Fengal by 27 November. The depression, located 770 km south-southeast of Chennai,

According to the India Meteorological Department (IMD), very heavy rainfall was observed in Tamil Nadu, Puducherry, and Karaikal during the past 24 hours until 8:30 a.m. (local time) Wednesday.

According to an IMD's rainfall update, very heavy rainfall was recorded in several areas, including Nagapattinam (19 cm) and Chennai (13 cm), from 8.30 am on November 26 until 8.30 am the following day.

Chennai’s RMC reported that a deep depression in the southwest Bay of Bengal could become a cyclonic storm. Heavy rains have prompted holidays for schools in Tamil Nadu districts and Puducherry on November 27.

Rain lashed parts of Tamil Nadu’s Nagapattinam as deep depression forms over southwest Bay of Bengal on7. District administration announced holiday for schools and colleges in several regions in view of continuous rainfall.