Light to Moderate Rain with Thunderstorm and Lightning is very likely to occur at isolated places over Cuddalore, Erode, Kanniyakumari, Karur, Mayiladuthurai, Ngpt, Nmkl, Pdk, Rmn, Sivaganga, Thanjavur, Thiruvarur, Thoothukkudi, Tirunelveli, Viluppuram, Karaikal, Pondicherry in next 3 hours.