A low-pressure area persists over the southwest Bay of Bengal, off the Tamil Nadu coast. Consequently, light to moderate rain with thunder and lightning is expected in many places in coastal Tamil Nadu, a few places in interior Tamil Nadu, and Puducherry and Karaikal today. Light fog is common in the morning. Heavy rain is likely in Kanyakumari, Tirunelveli, Thoothukudi, Ramanathapuram, Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, and Pudukkottai districts.