Light to Moderate Rain with light TS is likely to occur at isolated places over Chengalpattu, Chennai, Cuddalore, Kanniyakumari, Karur, Mayiladuthurai, Nagapattinam, Pudukkottai, Ramanathapuram, Sivaganga, Thanjavur, Thiruvallur, Thiruvarur, Tirunelveli, Viluppuram, Karaikal, Pondicherry in next 3 hours.