The ongoing heavy rainfall has caused waterlogging in parts of Chennai, including areas like Woods Road. South coastal districts such as Thoothukudi, Tirunelveli, and Kanniyakumari are at risk of very heavy rainfall until Thursday morning, which could lead to flooding and disruptions. Delta and interior districts, including Karur, Dindigul, Pudukottai, and Thanjavur, are also likely to experience heavy rainfall. The situation may impact transportation, daily activities, and agricultural operations in the affected regions.