For the third day in a row, the remnants of Cyclone Ditwah, now a well-marked low pressure area, continued to drench Chennai and Tiruvallur districts on Wednesday, December 3, 2025. The slow-moving system brought widespread heavy rainfall and is expected to affect more areas as it moves inland. The Regional Meteorological Centre (RMC) in Chennai issued an orange alert for northern Tamil Nadu, including Chennai, Kancheepuram, Ranipet, and Tiruvallur, as well as two Ghat districts. This warning indicates the possibility of very heavy rainfall. The Nilgiris and Ghat regions of Coimbatore may also see very heavy rains, reaching up to 20.4 cm. Meanwhile, 18 districts including Vellore, Tiruvannamalai, and adjoining areas like Madurai and Virudhunagar are under a yellow alert, signaling heavy rainfall up to 11.5 cm. The low pressure area is expected to move slowly southwest across north coastal Tamil Nadu and Puducherry and weaken further into a low pressure area by Thursday, December 4, 2025. In the past 24 hours ending Wednesday morning, Ennore and Hindustan University recorded heavy rainfall of 15 cm each. Chetpet in Tiruvannamalai saw 13 cm. Moderate to heavy rains also fell in Chennai, Pudukottai, Thanjavur, Kallakurichi, and Villupuram. Due to ongoing heavy showers, the Water Resources Department opened the Poondi and Chembarambakkam reservoir shutters to release 200 cubic feet of water per second, expecting more inflow. Water discharge from Red Hills reservoir was increased to 500 cusecs to create flood storage. The RMC warns that heavy rains will continue on Thursday in Krishnagiri, Dharmapuri, Tirupathur, and south coastal districts like Thoothukudi, Kanniyakumari, and Ramanathapuram. Stay safe and follow local advisories as the weather system moves inland.