On Tuesday and Wednesday light to moderate rain is likely at a few places in Tamil Nadu, Puducherry and Karaikal.
Around 13 districts in the State are likely to witness heavy rain on Thursday in isolated places over Kanniyakumari, Tirunelveli, Tenkasi, Thoothukudi, Ramanathapuram, Sivaganga, Pudukkottai, Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Cuddalore and Villupuram districts, Puducherry and Karaikal. Heavy rainfall predicted for several districts on Thursday.
According to P. Senthamarai Kannan, Director, Area Cyclone Warning Centre, light to moderate rain has been forecast at many places with thunderstorm and lightning over isolated places in Tamil Nadu, Puducherry and Karaikal on Thursday.
Strong winds with speed of 45-55 km/h gusting to 65 km/h are also likely to prevail over Tamil Nadu-south Andhra Pradesh coasts on Thursday and Friday.
This will be due to the low pressure area over southwest Bay of Bengal off Sri Lanka that is likely to form around Wednesday. The low pressure is very likely to move northwestwards towards Tamil Nadu-Puducherry coasts with possible slight intensification during the subsequent 48 hours.
Heavy rain is likely to occur at isolated places over Chengalpattu, Kancheepuram, Tiruvallur, Chennai, Ranipet, Kallakurichi, Ariyalur, Perambalur, Sivagangai, Thoothukudi, Tirunelveli, Kanniyakumari and Tiruchi districts on Friday.