Light to moderate Rain with thunderstorm is very likely to occur at isolated places over Chengalpattu, Dindigul, Kancheepuram, Karur, Madurai, Namakkal, Perambalur, Pudukkottai, Ranipet, Salem, Sivaganga, Thiruvallur, Tirupathur, Tiruppur, Virudhunagar in next 3 hours.