Light to Moderate rain Thunderstorm with Lightning is likely to occur at isolated places over Coimbatore, Dharmapuri, Dindigul, Erode, Kancheepuram, Karur, Krishnagiri, Ranipet, Salem, Tenkasi, Theni, The Nilgiris, Tirunelveli, Tirupathur, Tiruppur, Tiruvannamalai, Vellore, Virudhunagar in next 3 hours.