Low-Pressure Area Forms in Bay of Bengal; IMD Warns of Rainfall in Parts of Tamil Nadu

The India Meteorological Department (IMD) on Saturday warned that a new low-pressure area has formed over the Strait of Malacca and the adjoining south Andaman Sea on November 22, and is likely to intensify into a depression over the Bay of Bengal by Monday, November 24.

In a special bulletin, the IMD said the system, developing under the influence of a cyclonic circulation, is “very likely to move west-northwestwards and intensify into a depression over southeast Bay of Bengal and adjoining south Andaman Sea around November 24, 2025.” It added that the system may strengthen further over the southwest Bay of Bengal in the following 48 hours.

However, IMD experts remain uncertain whether the system will develop into a cyclonic storm, PTI reported.

Heavy Rainfall Forecast for Tamil Nadu, Kerala

The IMD has forecast heavy rainfall on Sunday, November 23, in isolated areas of the Andaman and Nicobar Islands, Kerala, Mahe, Lakshadweep, Tamil Nadu, Puducherry, and Karaikal. Thunderstorms with lightning and gusty winds reaching 40–50 kmph are likely in parts of the Andaman and Nicobar Islands.

The Regional Meteorological Centre in Chennai has also issued a yellow nowcast warning for several Tamil Nadu districts, predicting light to moderate rain with thunderstorms and lightning until 10 am on Sunday. Districts likely to be affected include Kanyakumari, Mayiladuthurai, Nagapattinam, Tenkasi, and Thiruvarur, along with the Karaikal region.

Puducherry recorded light rain on Sunday morning due to the developing low-pressure system over the Bay of Bengal, PTI reported.