Light to moderate Rain with thunderstorm is likely to occur at isolated places over Ariyalur, Coimbatore, Dharmapuri, Madurai, Mayiladuthurai, Nagapattinam, Ramanathapuram, Sivaganga, Thanjavur, The Nilgiris, Thiruvarur, Thoothukkudi, Virudhunagar, Karaikal in next 3 hours.