CHENNAI: After heavy rains lashed the city and its neighbours for the last few days, an upper air cyclonic circulation over the south Andaman Sea and adjoining south Bay of Bengal is likely to trigger heavy rains from October 26 (Sunday).

A low-pressure area is likely to form over the southeast and adjoining east-central Bay of Bengal on Friday. It is likely to move west-northwestwards and become more marked during the subsequent 24 hours.

According to the Regional Meteorological Centre, Chengalpattu, Kancheepuram, Ranipet, Villuppuram, and at isolated places over Tiruvallur, Chennai, and Puducherry on Sunday. Heavy rains are likely to continue till October 28 (Tuesday), except at Villupuram and Puducherry.

Light to moderate rains with thunderstorms and lightning are likely in a few po

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