Neighboring districts remain under an orange alert for heavy to very heavy rain (12–20 cm) on November 29-30. As of Thursday evening, the storm, which intensified from a depression in under 24 hours, lay 670 km south-southeast of Chennai, bringing torrential rains over Sri Lanka.
Rain is expected to begin in delta districts before spreading northwards. Chengalpet is among six districts under red alert on November 29, with extremely heavy rain possible at some locations. On November 30, Chennai, Chengalpet, Kancheepuram, Tiruvallur, and Ranipet may see heavy to very heavy rainfall.
CM Stalin directed all departments, including revenue, police, fire and rescue, fisheries, health, and local bodies, to coordinate for disaster preparedness. Coastal and adjoining districts such as Villupuram, Cuddalore, Tiruvannamalai, Nagapattinam, Mayiladuthurai, Ramanathapuram, Tiruvarur, Thanjavur, and Pudukkottai are also at risk of very heavy rainfall.
Bengaluru has been issued a yellow alert as Cyclone Ditwah-linked showers move north-northwest from the southwest Bay of Bengal, affecting north Tamil Nadu, Puducherry, and south Andhra Pradesh by November 30. Emergency response teams are mobilized, and residents are advised to secure property, avoid flood-prone areas, and follow official advisories. Stay with TOI for more updates: