Northeast India is under the risk of observing heavy rainfall during this week. In the past 24 hours, Assam and Arunachal Pradesh have received light to moderate rains and heavy rains were confined to Nagaland, Manipur, Mizoram and Tripura. Kohima, Lumding, Imphal, Lengpui, Kailashahar, Aizwal and Agartala have witnessed moderate to heavy rainfall in the past 24 hours. Rain intensity is likely to increase from 04thJuly onward.
There have been heavy rains in the catchment areas of Arunachal Pradesh. These have triggered heavy outflow in the mighty Brahmaputra. Upper Assam has been reeling under floods with eight rivers flowing above the danger mark and Brahmaputra breaching its highest flood level at Nematighat in Jorhat district. Earlier, the river had crossed the danger level at Dibrugarh also, but receded marginally below the mark today. Nineteen districts of Assam under floods have displaced over 6 lakh people.
The monsoon trough is having tendency to shift close to the foothills and Assam Valley. Southwesterly winds from the Bay of Bengal have been fueling the moisture, across Bangladesh. Rainfall activity is expected to increase after 48 hours. Heavy to very heavy rains are expected over Arunachal Pradesh, Assam and Meghalaya between 04th and 06thJuly 2024. Moderate rains at most places will continue, prior to these dates. Even, this activity will continue over the next week, as well.
Due to intense rains over Assam, Arunachal Pradesh, Meghalaya and the catchment areas, the flood situation may deteriorate, after mid-week. Upper Assam and Lower Assam, both will become vulnerable to severe floods. Brahmaputra, along with the tributaries are likely to go in spate. Water levels are expected to rise sharply, crossing the danger level at many places. Intense rains are likely to ease out a bit after 07thJuly. However, the water bodies keep responding, even after the rains have receded. Alert and alarm is sounded for the entire region and more so, for the Assam Valley for the next one week.