April 28, 2021 Earthquake: Assam, India
A magnitude 6 earthquake struck Assam, India on April 28, 2021 at 02:21:26 UTC, 34 km below the surface. It killed 2 people.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- April 28, 2021
- Time
- 02:21:26 UTC
- Place
- Assam, India
- Magnitude
- 6 (Mw)
- Focal depth
- 34 km (21 mi)
- Intensity
- 9 on the Modified Mercalli scale
- Tsunami
- None recorded
- Epicenter
- 26.782° N, 92.436° E
- Country
- India
The toll
- Deaths
- 2
- Injuries
- 12
- Damage
- Moderate (about $1 to $5 million)
- Houses damaged
- 428
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
What the record says
NCEI’s account, from the sources it cites.
Reference #12930:
An earthquake of Magnitude M: 6.4 with epicentre at 26.690 N and 92.360 E, focal depth of 17 Km in Sonitpur district occurred at 07:51:25 IST. 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.
[...] total number of injured persons has gone up to 12.
While no casualty resulting due to earthquake injuries reported but two persons (one each in Kamrup Metro and Nagaon districts) died due to shock /heart attack around the time of earthquake.
Damage Assessment has been completed in 18 districts so far and 428 residential houses/ apartments etc., 148 various private and public institutions like school, Anganwadi centre, Health Centre, Government buildings, Namghar etc. are reported to have been damaged. These damages have been reported from Baska, Biswanath, Bongaigaon, Darrang, Dibrugarh, Goalpara, Golaghat, Hojai, Jorhat, Kamrup Metro, Karbi Anglong, Lakhimpur, Morigaon, Nagaon, Nalbari, Sivasagar, Sonitpur and Udalguri districts. Other infrastructure damages include 1 embankment in Baska district, 2 bridges in Nagaon district, APDCL infrastructures in Sonitpur, Udalguri and Hojai district.
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- June 12, 1897, Assam, Bangladesh, India
- June 11, 1806, Shannan (Lhoka), Tibet (Xizang Province), China
- September 21, 2009, Tashigang, Bhutan
- February 23, 2006, Tashigang, Bhutan
- May 11, 2012, Kamrup, Guwahati, Assam, India
- 1713, Arunachal, Bhutan, India
- December 10, 1846, India
- December 31, 2009, Dametsi, Bhutan
- October 29, 2009, Mongar, Pemagatsel, Tashigang, Bhutan
- October 23, 1943, Assam, India
More
Significant earthquakes of 2021The 2000sEvery quake the USGS located in 2021Recent earthquakes near hereThis day in weather history
Sources
Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 10542.