Apr 29, 2017

Green earthquake alert (4.6M,depth:28.94km) in Japan at 4/29/2017 1:40:33 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:28.94km
  • 29 Apr 2017 13:40:33 UTC
  • 331465 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: 28.94 km (shallow)
  • Source: NEIC NEIC
  • Location (latitude/longitude): 30.7349, 131.343
  • Time (UTC): 29 Apr 2017 13:40:33
  • Time (ECT): 29 Apr 2017 15:40:33

Earthquake Impact Details

The earthquake happened off shore, near Japan, Region of Kyushu (population 13,296,000). The distance to the nearest coast is 24km. The nearest places are Shoiiura (25km), Anno (26km), Iseki (26km), Guniwa (26km), Azako (27km), and 51 more.

The following vulnerable infrastructure is nearby and may be affected.

For logistics, the following access points are nearby. The nearest airports are Nishinoomote (30km), Tanegashima (runway 4900ft, 42km), Yakushima (runway 4900ft, 75km), and Kanoya (runway 7300ft, 85km). The nearest ports are Shibushi (84km), Yamagawa (85km), and Aburatsu (93km).

The maximum altitude nearby is NaNm.

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

Radius Population Density (people/km2)
75 km 37000 people 2
50 km 23000 people 2
20 km no people 0
10 km no people 0



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