New Low-Pressure System Forms Over Bay of Bengal; Northeast Monsoon May Intensify in Tamil Nadu from November 1

The Northeast Monsoon is likely to become more active across Tamil Nadu from November 1, 2026, following the formation of a new low-pressure area over the sea near the Andaman Islands, according to the India Meteorological Department (IMD).

The weather system is expected to move west-northwestwards and may strengthen over the next 48 hours, bringing the possibility of renewed monsoon activity across parts of Tamil Nadu.

Low-Pressure Area Likely to Strengthen

According to the weather report published on October 29, a low-pressure area has formed over the sea near the Andaman Islands and adjoining areas.

The system is expected to intensify into a depression over the southeast Bay of Bengal within the next 48 hours. It is then likely to move towards the west-northwest.

The system is forecast to reach the northern Tamil Nadu and southern Andhra Pradesh coastal region around November 1.

Northeast Monsoon May Intensify from November 1

The movement and strengthening of the weather system could increase rainfall activity across Tamil Nadu from November 1, according to the IMD forecast cited in the report.

The development comes during the Northeast Monsoon season, which brings a significant share of Tamil Nadu`s annual rainfall.

Residents should monitor official weather bulletins for updated information on rainfall forecasts, possible heavy rain and any local advisories. The intensity and distribution of rainfall will depend on the system`s movement and further development.