Overview
- The quake struck on Sunday night, June 7, 2026, at about 23:06 IST and the National Centre for Seismology (NCS) issued a preliminary Mw 5.8 report giving the epicentre at 27.627°N, 89.660°E and a focal depth of 26 km.
- NCS recorded a sequence of smaller aftershocks, including a magnitude 2.8 event about 12 minutes after the main shock, and national and state disaster agencies continue to monitor the area for further activity.
- Tremors were widely felt across parts of India (West Bengal, Sikkim, Assam and Kolkata), Nepal, southern China and Bangladesh, with residents reporting brief, noticeable shaking and many temporarily evacuating buildings.
- Early magnitude and depth estimates differed between agencies—USGS and GFZ reported about M5.6 at a shallower ~10 km while mobile alert systems gave ~M5.7—which seismologists say is normal in fast, preliminary analyses.
- NCS waveform inversion links the event to thrust faulting on the locked Main Himalayan Thrust and experts note the quake follows a period of elevated regional seismicity, underscoring the need for infrastructure checks and continued monitoring.