sábado, 31 de octubre de 2015

GREEN earthquake alert (4.8M,depth:42.04km) in Japan at 10/31/2015 2:20:05 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 4.8M, Depth:42.04km
  • 31 Oct 2015 14:20:05 UTC
  • 18950548 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: 4.8 M
  • Depth: 42.04 km (deep)
  • Source: NEIC
  • Location (latitude/longitude): 35.8562, 140.7517
  • Time (UTC): 31 Oct 2015 14:20:05
  • Time (ECT): 31 Oct 2015 15:20:05

Earthquake Impact Details

The earthquake happened inJapan, Region of Kanto (population 38,543,000). The nearest places are Okunoya (4km), Mito (240000 people , 61km), and Chiba (910000 people , 62km).

The following vulnerable infrastructure is nearby and may be affected. The nearest hydrodams are Kasumigaura-Kaihatsu (22km). The nearest protected areas are Suigo - Tsukuba (7km), and Ukishima (25km).

For logistics, the following access points are nearby. The nearest airports are Tokyo Narita International (runway 13100ft, 33km), Ryugasaki (44km), Hyakuri (runway 8800ft, 44km), and Ryugasaki South (44km). The nearest ports are Kashima (4km), and Choshi (17km).

The maximum altitude nearby is 700m. The area has steep slopes (up to 20 percent) and may be susceptible to landslides.

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

Radius Population Density (people/km2)
75 km 6.9 million people 394
50 km 1.3 million people 176
20 km 360000 people 293
10 km 95000 people 303



While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information. The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website. Please refer to the GDACS website for subscribing or unsubscribing from the earthquake alert email or SMS service.