Chennai: The Chennai Meteorological Department has issued an extensive heavy rainfall warning for a majority of districts in Tamil Nadu, forecasting a week-long spell of intense weather activity starting today, October 13, 2025. The alert comes as a low-pressure area consolidates over the southwest Bay of Bengal and the adjacent south Tamil Nadu coast, promising widespread precipitation across the state and the union territories of Puducherry and Karaikal.

The weather office has predicted light to moderate rain with thunder and lightning at many places across the region throughout the week, with specific districts being flagged for isolated to widespread heavy rainfall on different days.

Tamil Nadu Weather Forecast This Week

The initial phase of the weather system on October 13 is expe

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