The institute has warned of heavy rainfalls in the provinces of Kerman, Yazd, Mazandaran, Semnan, Golestan, Isfahan, Fars, Tehran, Alborz, Markazi, Hamedan, Qom and Chaharmahal and Bakhtiari, Sistan and Baluchistan and South
Khorasan.
The southeastern province of Sistan and Baluchistan is already grappling with severe floods which have inundated the province southern cities and villages.
At least 10 people have lost their lives in the floods.