Apr 29, 2017

Green earthquake alert (5.7M,depth:21.39km) in Japan at 4/29/2017 12:32:32 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 5.7M, Depth:21.39km
  • 29 Apr 2017 12:32:32 UTC
  • 324196 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: 5.7 M
  • Depth: 21.39 km (shallow)
  • Area affected by light damage (estimated radius): 13 km (MMI IV)
  • Source: NEIC NEIC
  • Location (latitude/longitude): 30.8134, 131.4291
  • Time (UTC): 29 Apr 2017 12:32:32
  • Time (ECT): 29 Apr 2017 14:32:32

Earthquake Impact Details

The earthquake happened off shore, near Japan, Region of Kyushu (population 13,296,000). The distance to the nearest coast is 32km. The nearest places are Minato (34km), Iseki (35km), Shoiiura (35km), Yanagihara (35km), Guniwa (35km), 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 (37km), Tanegashima (runway 4900ft, 54km), Kanoya (runway 7300ft, 83km), and Yakushima (runway 4900ft, 87km). The nearest ports are Shibushi (78km), Aburatsu (84km), and Yamagawa (87km).

The maximum altitude nearby is NaNm.

The approximate distance within which light damage may occur is 12km (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
75 km 40000 people 2
50 km 13000 people 1
20 km no people 0 Likely
10 km no people 0 Very likely



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