Light to moderate Rain with thunderstorm is likely to occur at isolated places over Ariyalur, Chengalpattu, Chennai, Dindigul, Erode, Kanniyakumari, Madurai, Pudukkottai, Ramanathapuram, Sivaganga, Tenkasi, Thanjavur, Theni, Thoothukkudi, Tiruchirappalli, Tirunelveli, Virudhunagar in next 3 hours.