The NDMA also warned about the possibility of strong winds with the speed of 25-35 kmph gusting to 45 kmph, hitting over interior Odisha, Chhattisgarh and Jharkhand till Saturday.
Heavy to very heavy rains are likely to occur at isolated places in Madhya Pradesh, Chhattisgarh, Odisha, Assam, Meghalaya, Nagaland, Manipur, Mizoram, Tripura, Sub Himalayan West Bengal, Sikkim, Jharkhand, west Uttar Pradesh, Uttarakhand, Haryana, Chandigarh, Delhi, Himachal, east Rajasthan, Konkan, Goa, Vidarbha and Telangana, the NDMA said, quoting a bulletin from the India Meteorological Department.
The authority advised people to stock first aid kits, torch, bottled drinking water, non-perishable food items and not to allow children to play near water bodies in flood-prone areas.
The NDMA also suggested that domestic animals should not be put on leash and people should stay away from sewerage lines, drains and culverts.
Over 1,400 people, including 488 in Kerala, have lost their lives due to rains, floods and landslides in 10 states so far in the monsoon season, according to the Home Ministry.
As many as 254 people have died in Uttar Pradesh, 210 in West Bengal, 170 in Karnataka, 139 in Maharashtra, 52 in Gujarat, 50 in Assam, 37 in Uttarakhand, 29 in Odisha and 11 in Nagaland.
Forty-three people have been missing -- 15 in Kerala, 14 in Uttar Pradesh, five in West Bengal, six in Uttarakhand and three in Karnataka -- while 386 have been injured in rain-related incidents in 10 states.
Rains and floods have hit 30 districts in Odisha, 26 districts in Maharashtra, 25 in Assam, 23 each in Uttar Pradesh and West Bengal, 14 in Kerala, 13 in Uttarakhand, 11 each in Karnataka and Nagaland and 10 in Gujarat.