Nov 21, 2016

Orange earthquake alert (7.3M,depth:10km) in Japan at 11/21/2016 8:59:46 PM

Orange Earthquake in Japan


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


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

  • Earthquake Magnitude 7.3M, Depth:10km
  • 21 Nov 2016 20:59:46 UTC
  • 392929 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: 7.3 M
  • Depth: 10 km (very shallow)
  • Area affected by light damage (estimated radius): 105 km (MMI IV)
  • Source: NTWC    
  • Location (latitude/longitude): 37.272, 141.644
  • Time (UTC): 21 Nov 2016 20:59:46
  • Time (ECT): 21 Nov 2016 21:59:46

Earthquake Impact Details

The earthquake happened off shore, near Japan, Region of Tohoku (population 9,984,608). The distance to the nearest coast is 54km. The nearest places are Oragahama (54km), Tomioka (56km), Ide (56km), Shimo-Kitabo (56km), Kami-Shigeoka (57km), and 28 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 (75km), and Soma (86km).

The maximum altitude nearby is NaNm.

The approximate distance within which light damage may occur is 104km (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
200 km 7 million people 56 Likely
100 km 390000 people 12 Very likely
75 km 9700 people 0 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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