Heavy rainfall is set to lash parts of northeastern states of India till April 1, 2021, the India Meteorological Department (IMD) said. In its all India weather bulletin, the IMD said that heavy rainfall is very likely over Assam, Meghalaya, Nagaland, Manipur, Mizoram, and Tripura on March 31 and over Arunachal Pradesh from March 31 to April 1.