Results and Discussions

Analysis of the Atmospheric River

The AR analysis indicates that an AR made landfall in the NE region of India on 15 June at 12 AM provided in Figure 2 where the moisture movement had been initiated from the Arabian Sea and the moisture front traveled across Northern India. Additionally, the IVT front persisted for 72 hours as a form of AR where the length of the front decreased. Later, the available moisture in the North Eastern India intensified by the supply of Moisture from Bay of Bengal during 16 to 18 June. Consequently, Indian Meteorological Department (IMD) recorded the extreme rainfall from 15 June in the North Indian region where Mawsynram and Cherapunjee received the heaviest rainfall on 17 June, around 1000 mm. Therefore, the presence of AR before the extreme rainfall from 14 to 17 June indicated the moisture from AR movement had a significant role in this extreme precipitation.