An atmospheric low circulation is prevailing over the Southwest Bay of Bengal. As a result, widespread rains are falling in various districts of Tamil Nadu.
In this situation, in the next 3 hours, there is a chance of rain in 18 districts of Tamil Nadu, according to the Meteorological Department. Accordingly, Thiruvallur, Chennai, Chengalpattu, Kanchipuram, Thiruvannamalai, Villupuram, Kallakurichi, Cuddalore, Mayiladuthurai, Nagapattinam, Thiruvarur, Thanjavur, Pudukottai, Ramanathapuram, Sivagangai, Thoothukudi, Tirunelveli, Kanyakumari districts and Puducherry. The Chennai Meteorological Department has said that there is a possibility of moderate rain with thundershowers in Karaikal areas as well.