The India Meteorological Department (IMD) has issued a heavy rainfall warning for 13 states for October 1 (Wednesday). According to IMD's latest bulletin, heavy rainfall is very likely over Arunachal Pradesh, Assam, Meghalaya, Chhattisgarh, Andhra Pradesh, Goa, Maharashtra, Nagaland, Manipur, Mizoram, Tripura, Odisha and Gujarat.