The IMD has issued heavy to very heavy rainfall warning for 19 states/Union Territories for Saturday (September 13). It is very likely over Arunachal Pradesh, Assam, Meghalaya, Goa, Maharashtra, Nagaland, Manipur, Mizoram, Tripura, Karnataka, West Bengal, Sikkim, Andaman and Nicobar Islands, Andhra Pradesh, Bihar, Chhattisgarh, Himachal Pradesh, Telangana and Uttarakhand.