Light to Moderate Rain with thunderstorm and lighting is likely to occur at isolated places over Cuddalore, Dindigul, Kancheepuram, Karur, Mayiladuthurai, Nagapattinam, Ramanathapuram, Ranipet, Sivaganga, Tenkasi, Thiruvarur, Tiruppur, Vellore, Viluppuram, Karaikal and Pondicherry in next 3 hours.