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

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

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

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
Source: NEIC us7000dy3b
Inserted at: 28 Apr 2021 02:53 UTC
INFORM Coping capacity of the alert score: 4.6 (India)
INFORM Coping capacity of the affected contries: 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.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1372483 0 28 Apr 2021 02:21 6M, 28.93km 5.88 N/A (in MMI>=VII) 00:19 NEIC
1372484 1.1 28 Apr 2021 02:21 6M, 34km 6.7 500 thousand (in MMI>=VII) 00:31 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in India ,of Assam (population 501,279) . The alertlevel for this event is ORANGE

Intensity Population
500000 people
3.9 million people
4.5 million people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1372483 26.787/92.42 6.0 28.9 5.883 28 Apr 2021 02:45 00:23 (new episode)
2 0.1 1372484 26.782/92.436 6.0 34.0 6.588 28 Apr 2021 03:30 01:09 (new episode)
3 1.1 1372484 26.782/92.436 6.0 34.0 6.662 28 Apr 2021 04:26 02:05 (upd of #2)
4 1.1 1372484 26.782/92.436 6.0 34.0 6.702 29 Apr 2021 02:48 1d 00:27 (upd of #3)

Affected Provinces

Intensity Region Province Country Population
Assam India 500000 people
Assam India 3.8 million people
Arunachal Pradesh India 27000 people
Samdrup Jongkhar Bhutan 1000 people
Assam India 4.5 million people
Arunachal Pradesh India 6200 people
Samdrup Jongkhar Bhutan 8100 people
Meghalaya India 33000 people
Assam India 6 million people
Arunachal Pradesh India 240000 people
Samdrup Jongkhar Bhutan 27000 people
Tashigang Bhutan 8900 people
Meghalaya India 670000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Dhekiajuli Assam India Village 21000 people 11 km
Digbaljuli Assam India Village - 14 km
Majbat Assam India Village - 14 km
Singri Assam India Village - 22 km
Rangapara North Assam India Village - 30 km
Udalguri Assam India Village 16000 people 31 km
Amatulla Arunachal Pradesh India Village - 34 km
Dalgaon Assam India Village - 35 km
Dhing Assam India Village 21000 people 38 km
Tezpur Assam India Village 58000 people 41 km
Kharupatia Assam India Village - 41 km
Kobirali Assam India Village - 45 km
Major Chuk Assam India Village - 47 km
Nowgong Assam India City - 54 km
Maugaldai Assam India Village - 56 km
Kakamari Assam India Village - 57 km
Simanagaon Assam India Village - 65 km
Kampur Assam India Village - 71 km
Paschim Naokota Assam India Village - 72 km
Loch Assam India Village - 77 km
Rangia Assam India Village 26000 people 90 km
Baihata Assam India Village - 92 km
Pomahi Assam India Village - 95 km
North Gauhati Assam India City - 95 km
Gauhati Assam India City - 95 km
Hajo Assam India Village - 106 km
Palashari Assam India Village - 116 km
Kalaktang Arunachal Pradesh India Village - 48 km
Bomdila Arunachal Pradesh India Village - 53 km
Pyudung Arunachal Pradesh India Village - 63 km
Karangania Arunachal Pradesh India Village - 65 km
Dijungania Arunachal Pradesh India Village - 69 km
Lengteng Assam India Village - 70 km
Nashir Arunachal Pradesh India Village - 73 km
Makariagaon Assam India Village - 75 km
Ginjia Assam India Village - 80 km
Kangpar Trashigang Bhutan Village - 81 km
Narjon Basti Assam India Village - 83 km
Jenggaon Assam India Village - 86 km
Rang Arunachal Pradesh India Village - 87 km
Samdrup Jongkhar Samdrup-Jongkhar Bhutan City 2000 people 87 km
Semma Arunachal Pradesh India Village - 87 km
Baitha Langso Assam India Village - 90 km
Daranga Assam India Village - 92 km
Umkashi Assam India Village - 92 km
Erdangkramsa Assam India Village - 97 km
Jinthanggaon Assam India Village - 97 km
Phuluni Assam India Village - 99 km
Kaki Assam India Village - 104 km
Barjhar Assam India Village - 106 km
Nalbari Assam India Village 24000 people 107 km
Himaigaon Assam India Village - 107 km
Mawhati Meghalaya India Village - 110 km
Kharikhanapatti Assam India Village - 111 km
Longkamgaon Assam India Village - 111 km
Nongpoh Meghalaya India Village 14000 people 112 km
Pamdkhar Meghalaya India Village - 117 km
Kaolakhat Assam India Village - 120 km
Amring Assam India Village - 121 km
Sarkher Bashi Assam India Village - 123 km
Itanagar Arunachal Pradesh India Village 35000 people 124 km
Haulighat Assam India Village - 125 km
Umran Meghalaya India Village - 125 km
Mutah Meghalaya India Village - 128 km
Bhoilymbong Meghalaya India Village - 129 km
Dommati Meghalaya India Village - 132 km
Loharghat Assam India Village - 132 km
Shillong Meghalaya India City 130000 people 146 km
Borduttighat Assam India Village - 153 km

see full list


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Tezpur 73 0 36 km
Borjhar GAU 49 Civ. Paved Yes 9000 113 km
Shillong SHL 899 Civ. Paved No 6000 128 km

Dams

Intensity Reservoir Dam Name River Year Distance
Umiam Umiam Umiam 1964 136 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.