Nov 21, 2016

Green earthquake alert (6.8M,depth:10km) in Japan at 11/21/2016 8:59:49 PM

Green Earthquake in Japan


Population Density near epicenter (people/km2). Image area: 6x4 decimal degrees (approx. 650x450km2).


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

  • Earthquake Magnitude 6.8M, Depth:10km
  • 21 Nov 2016 20:59:49 UTC
  • 515522 people within 100km

Whether international humanitarian aid is needed must be decided by an expert.

See the GDACS website for live news coverage (including OCHA Situation Reports), the full earthquake report

For information on emergency response, please consult the GDACS Virtual OSOCC.


Earthquake Event


  • Magnitude: 6.8 M
  • Depth: 10 km (very shallow)
  • Area affected by light damage (estimated radius): 79 km (MMI IV)
  • Source: GEOFON
  • Location (latitude/longitude): 37.35, 141.5
  • Time (UTC): 21 Nov 2016 20:59:49
  • Time (ECT): 21 Nov 2016 21:59:49

Earthquake Impact Details

The earthquake happened off shore, near Japan, Region of Tohoku (population 9,984,608). The distance to the nearest coast is 40km. The nearest places are Oragahama (41km), Tomioka (43km), Bogoya (44km), Kami-Shigeoka (44km), Ide (44km), and 77 more.

The following vulnerable infrastructure is nearby and may be affected.

For logistics, the following access points are nearby. There are no known airports nearby. The nearest ports are Onahama (69km), and Soma (71km).

The maximum altitude nearby is NaNm.

The approximate distance within which light damage may occur is 79km (equivalent to Modified Mercalli Index IV).

The population near the earthquake is shown in the table below.

Radius Population Density (people/km2) Affected with damage
100 km 510000 people 16 Likely
75 km 160000 people 9 Very likely
50 km no people 0 Very likely
20 km no people 0 Very likely
10 km no people 0 Very likely



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