M 6 in India on 28 Apr 2021 02:21 UTC

Event summary

This earthquake can have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

GDACS ID EQ 1266651
Earthquake Magnitude: 6.0M
Depth: 34 Km
Lat/Lon: 26.7824 , 92.4358
Event Date: 28 Apr 2021 02:21 UTC
28 Apr 2021 07:51 Local
Exposed Population: 500000 people in MMI
10410000 people within 100km
Inserted at: 28 Apr 2021 02:53 UTC
INFORM Coping capacity:
4.6 (India)
INFORM Coping capacity list: Bhutan= 4.6; India= 4.6

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 1.1 1.1
us7000dy3b Scaled population (vector) 4.7  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.94  
Maximum expected impact using different data sources.
Virtual OSOCC
Meteo assessment
Satellite products
Analytical products
India - Earthquake (ECHO 28 Apr 2021)Wed, 28 Apr 2021 16:15

  • An earthquake of 6.4 M at a depth of 17 km (according to the National Center of Seismology of India) occurred in Sonitpur District (northern Assam State, north-eastern India) on 28 April at 02.21 UTC (07.51 local time). The epicentre was located approximately 10 km north-west of Dhekiajuli Town (Sonitpur District, Assam State).
  • The earthquake was followed by six aftershocks in the same area with magnitude up to 4.7 M. USGS PAGER estimates that up to 427,000 people were exposed to very strong shaking and up to 3,637,000 to strong shaking.
  • According to media reports, there are no casualties so far but damage to several buildings and roads have been reported across the State, particularly in Sonitpur District. The earthquake was felt in the entire northeast region, including neighbouring Meghalaya, Arunachal Pradesh and West Bengal.
  • On 28-29 April light to moderate rain is expected across Assam State.
India - Earthquake update (ECHO 29 Apr 2021)Thu, 29 Apr 2021 15:25

  • Following the earthquake of 6.4 M that occurred in Sonitpur District (northern Assam State, north-eastern India) on 28 April, casualties and damage have been reported by national authorities.
  • According to the Assam State Disaster Management Authority (ASDMA), two fatalities occurred, indirectly related to the seismic event, and ten have been injured. Cracks have been registered in many private and public buildings but there are no reports of severe damage like collapse of building or disruption of any major infrastructure.
  • The National Center of Seismology of India recorded more than 15 aftershocks in the area with magnitude up to 4.7 M. The damage assessment, conducted by the national authorities, is ongoing.
  • On 29-30 April moderate rain with thunderstorms is forecast across Assam State.
Detailed event map. European Union, 2024. Map produced by EC-JRC.
The boundaries and the names shown on this map do not imply official endorsement or acceptance by the European Union.

Updates on volcanic activity (Smithsonian)

Latest media headlines

Articles: 192 | About casualties: 5 | Last hour: 0

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Estimated casualties (PAGER)

USGS estimates the number of casualties for each earthquake for the Prompt Assessment of Global Earthquakes for Response (PAGER) product.
The graph shows the current fatalities estimate.

Exposed population

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EC-JRC (48), (3), NEIC (4), OCHA (1), INGV (1), DesInventar (4), WMO (1), USGS (5), INFORM (2),