Tamil Nadu Rain Forecast: Heavy Showers Likely in Delta

The weather department has linked the conditions to two systems working together: an atmospheric circulation over the Comorin Sea and adjoining areas, and a trough stretching from southern Tamil Nadu to the east-central Arabian Sea. The combination is expected to cause widespread atmospheric instability, which explains why the forecast covers such a large part of the state.

The risk is not confined to the coast. Thunderstorms with strong winds and rainfall at isolated places have also been forecast for the Nilgiris, Coimbatore, Tiruppur, Virudhunagar, Dindigul, Madurai, Theni, Thoothukudi, Tenkasi, Tirunelveli and Kanniyakumari districts. Other parts of Tamil Nadu and Puducherry may receive light rain at a few places, along with thunderstorms and lightning.

Chennai and its surrounding areas are expected to remain generally cloudy through the day, with light rain or thundershowers likely at isolated locations.

Why the delta needs watching

The forecast indicates that rainfall activity could stay concentrated in the Cauvery delta districts and adjoining coastal areas, while thunderstorms come and go elsewhere. That matters because the delta is Tamil Nadu's rice-growing heartland, where a concentrated spell of rain can affect farm work as well as daily travel. "Isolated" is also an important word in the forecast: one locality may receive a heavy downpour while a neighbouring one stays largely dry, making local conditions harder to judge.

The forecast also comes on the heels of significant rainfall across Chennai and other parts of the state. In the 24 hours ending at 8.30 a.m. on Sunday, Parimunai and Maduravoyal in Chennai recorded the highest rainfall at 9 cm. Nungambakkam and Tondiarpet in Chennai, along with Kayalpattinam in Thoothukudi district, recorded approximately 8 cm during the same period.

With further showers possible in coastal and southern regions, the weather department has advised residents, particularly those in districts facing heavy rainfall, to remain cautious during thunderstorms and strong winds. For most people, the practical concern on Monday may be the lightning and gusty winds as much as the rain itself, especially for anyone working or travelling in the open.

With inputs from IANS