Six aftershocks follow Assam’s 6.4 magnitude earthquake, no casualties reported

There were no immediate reports of loss of lives or property.

Published: 28th April 2021 08:49 AM  |   Last Updated: 28th April 2021 04:00 PM   |  A+A-

A hill in Bhairabkunda

A hill in Bhairabkunda in Udalguri district. Udalguri adjoins Sonitpur district, the epicentre of the earthquake. (Photo by special arrangement)

Express News Service

GUWAHATI: A massive earthquake of 6.4 magnitude hit Assam on Wednesday morning, causing widespread damage in the Northeast state. The quake was followed by six aftershocks.

The National Centre of Seismology (NCS) said six aftershocks of magnitude, ranging from 3.2 to 4.7, occurred within two and half hours from the time of the occurrence of mainshock of 6.4 Magnitude, signifying the release of the stress in the vicinity of the source zone in and around Sonitpur district of Assam.

The epicentre of the earthquake was closer to the plate boundary and located at about 80 Km north-east of Guwahati; 132 km north of Shillong and 180 km west of Jorhat.

“The preliminary analysis shows that the events are located near to Kopili Fault closer to Himalayan Frontal Thrust (HFT). The area is seismically very active falling in the highest Seismic Hazard zone V associated with collisional tectonics where Indian plate subducts beneath the Eurasian Plate,” the NCS said in a statement.

“The earthquake (of Wednesday) is felt in the entire North East region of India and some parts of Bihar, West Bengal and Bangladesh. More than 70 felt reports due to this earthquake, have been received from Assam, Bihar, West Bengal and Bangladesh through the NCS website and Mobile App having intensity ranging from I to V on Modified Mercalli Intensity (MMI) Scale Figure 3.

Damages to buildings also reported within 100 km from the epicentre in areas of Sonitpur, Nagaon and Guwahati as received from Central Seismological Observatory, NCS, Shillong,” the statement said.

India Matters


Disclaimer : We respect your thoughts and views! But we need to be judicious while moderating your comments. All the comments will be moderated by the editorial. Abstain from posting comments that are obscene, defamatory or inflammatory, and do not indulge in personal attacks. Try to avoid outside hyperlinks inside the comment. Help us delete comments that do not follow these guidelines.

The views expressed in comments published on are those of the comment writers alone. They do not represent the views or opinions of or its staff, nor do they represent the views or opinions of The New Indian Express Group, or any entity of, or affiliated with, The New Indian Express Group. reserves the right to take any or all comments down at any time.

flipboard facebook twitter whatsapp