Chennai Rain: The Meteorological Department has announced that the Northeast Monsoon will commence in Tamil Nadu within two days. It stated that rain accompanied by thunder and lightning is likely today in 14 districts—ranging from Chennai and Tiruvallur to Tirunelveli and Kanyakumari—and that heavy rain is expected to lash Tirunelveli, Thoothukudi, Kanyakumari, and Ramanathapuram tomorrow.