The 1984 Cachar earthquake rattled much of Southern Assam on December 31, 1984, at 5:03 a.m. (UTC+5:30) with an epicenter 20 kilometers southwest of Lakhipur.

Isoseismal maps with intensity contours in the area also suggest the depth of focus is shallower than initially finalized; at 10 kilometers or less.

[6] Multiple ground failures and liquefaction were observed, which was considered unusual due to it being too moderate in size to generate an effect similar to this normally seen in larger earthquakes.

Places with weak infrastructural management, most notably homes made out of soft mud, clay and bricks were a contributing factor to the deaths reported.

An embankment in the Socai river collapsed, flooding multiple villages and towns, and causing many to lose their homes.