The India Meteorological Department has issued a heavy rainfall warning for Tamil Nadu and Puducherry from January 8 to January 10, 2026. Chennai is likely to experience the heaviest rainfall on January 10 as the weather system reaches its closest approach to the coast. A yellow alert has been issued for Ramanathapuram, Pudukkottai, Thanjavur, Tiruvarur, Nagapattinam, Cuddalore, and Karaikal.