Southern Tamil Nadu is likely to experience intense rainfall until November 12 as an existing cyclonic circulation over the Comorin region continues to influence weather conditions across the State. The Regional Meteorological Centre (RMC), Chennai, is closely monitoring another developing weather system over the Bay of Bengal that could bring a fresh spell of rainfall in the coming days.
According to meteorological officials, the movement of the existing weather system has shifted, concentrating rainfall mainly over southern coastal and Cauvery delta districts. Heavy rainfall is likely at isolated places in Ramanathapuram and Thoothukudi districts, while moderate showers are expected in Thanjavur, Mayiladuthurai, Madurai and neighbouring areas.
During the 24 hours ending at 8:30 a.m. on November 9, Kayalpattinam in Thoothukudi district recorded the highest rainfall in Tamil Nadu at approximately 11 cm. Several other locations also experienced significant rainfall.
Meanwhile, the RMC is monitoring a fresh upper-air cyclonic circulation expected to develop over the southeastern Bay of Bengal around November 13. Although current weather models indicate a low probability of its intensification into a depression, officials say its movement will determine the distribution and intensity of rainfall.
The weather department expects rainfall activity to increase across Tamil Nadu from November 15, potentially covering northern districts, including Chennai. The capital is likely to experience light showers until Wednesday.
Authorities are continuing to monitor changing atmospheric conditions as the northeast monsoon remains active across the region.
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