The Regional Meteorological Centre (RMC) successful Chennai, connected Monday (December 1, 2025), forecast dense to precise dense rainfall successful Tiruvallur and Chennai districts till Tuesday (December 2) greeting owed to the heavy slump implicit the Southwest Bay of Bengal and adjoining northbound Tamil Nadu-Puducherry coasts.
Heavy rainfall is apt to hap astatine isolated places implicit Ranipet, Kancheepuram and Chengalpattu districts. From astir 11 a.m. connected Monday, galore places successful Chennai metropolis witnessed dense rains that led to roads flooding and postulation slowing down. Several schools allowed children to permission aboriginal owed to incessant showers.
According to the RMC arsenic of 11.30 a.m., the heavy depression, which is simply a remnant of the cyclonic tempest Ditwah, moved dilatory northwards with the velocity of 3 kmph during the past six hours and laic centred about 50 km eastbound of Chennai, 140 km northeast of Puducherry, 160 km north-northeast of Cuddalore, 170 km south-southeast of Nellore.

Heavy rainfall resulted successful waterlogging connected galore roads and successful low-lying areas of Chennai owed to interaction of Cyclone Ditwah. A country of workers pumping retired rainwater from the railway tracks astatine Egmore Railway presumption successful the metropolis on December 1, 2025 | Photo Credit: B. Jothi Ramalingam
It is precise apt to determination dilatory northwards parallel to northbound Tamil Nadu and southbound Andhra Pradesh coasts and support the strength of heavy slump till Monday evening. Thereafter continuing to determination dilatory northwards, it is precise apt to weaken into a slump during consequent 12 hours.

Greater Chennai Corporation workers astatine Vijayaragavapuram successful K.K. Nagar connected December 1, 2025 | Photo Credit: B. Velankanni Raj
The strategy volition beryllium centred implicit westcentral and adjoining southwest Bay of Bengal wrong a minimum region of 30 km from the Chennai seashore by this evening.

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