Heavy to very heavy rainfall and an orange alert have been predicted for isolated places in Ariyalur, Thanjavur, Tiruvarur, and Pudukkottai districts. Heavy rain is also likely at isolated places in Chennai, Tiruvallur, Kanchipuram, Chengalpattu, Tiruvannamalai, Villupuram, Kallakurichi, Cuddalore, Perambalur, Tiruchirappalli, Sivagangai, Ramanathapuram, Mayiladuthurai, Nagapattinam, Coimbatore, Tiruppur, Karur, Dindigul, Theni, Madurai, Virudhunagar, Tenkasi, Thoothukudi districts, and in Puducherry and Karaikal.