May 23, 2017

Green earthquake alert (4.6M,depth:26.87km) in Japan at 5/23/2017 2:16:55 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 4.6M, Depth:26.87km
  • 23 May 2017 14:16:55 UTC
  • 353003 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: 4.6 M
  • Depth: 26.87 km (shallow)
  • Source: NEIC NEIC
  • Location (latitude/longitude): 30.8335, 131.3971
  • Time (UTC): 23 May 2017 14:16:55
  • Time (ECT): 23 May 2017 16:16:55

Earthquake Impact Details

The earthquake happened off shore, near Japan, Region of Kyushu (population 13,296,000). The distance to the nearest coast is 30km. The nearest places are Minato (32km), Iseki (32km), Yanagihara (33km), Guniwa (33km), Shoiiura (33km), and 52 more.

The following vulnerable infrastructure is nearby and may be affected.

For logistics, the following access points are nearby. The nearest airports are Nishinoomote (35km), Tanegashima (runway 4900ft, 53km), Kanoya (runway 7300ft, 80km), and Yakushima (runway 4900ft, 86km). The nearest ports are Shibushi (75km), Aburatsu (82km), and Yamagawa (83km).

The maximum altitude nearby is NaNm.

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

Radius Population Density (people/km2)
75 km 58000 people 3
50 km 15000 people 1
20 km no people 0
10 km no people 0



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