M 4.6 in Japan on 02 Aug 2016 16:10 UTC

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

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: 17.79 Km
Lat/Lon: 35.3799 , 140.4697
Event Date: 02 Aug 2016 16:10 UTC
03 Aug 2016 01:10 Local
Exposed Population:
20337956 people within 100km
Source: NEIC us100069h8
Inserted at: 02 Aug 2016 18:09 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us100069h8 Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1135603 0 02 Aug 2016 16:10 4.6M, 17.79km N/A 20.3 million (in 100km) 01:58 NEIC
The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.
The episode that has the last updated information.
* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Japan , Region of Kanto (population 38,543,000) . The nearest places are Ichinomiya, Mobara, Katakai, Ohara, Togane, Oami, Chonan, Hasunuma, Naruto, and Katsuura.

Radius Population
100 km 20.3 million people
75 km 6 million people
50 km 1.9 million people
20 km 170000 people
10 km 3700 people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Ichinomiya Chiba Japan Village - 10 km
Mobara Chiba Japan City 96000 people 16 km
Katakai Chiba Japan City - 16 km
Ohara Chiba Japan City 20000 people 16 km
Togane Chiba Japan Village 55000 people 21 km
Oami Chiba Japan Village - 21 km
Chonan Chiba Japan Village - 21 km
Hasunuma Chiba Japan Village - 24 km
Naruto Chiba Japan City 22000 people 26 km
Katsuura Chiba Japan Village 22000 people 29 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Shimoshizu 30 0 42 km
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 43 km
Kisarazu 3 Mil. Paved Yes 6000 51 km
Ryugasaki South 2 0 58 km
Shimofusa 30 Civ. Paved Yes 7300 62 km
Ryugasaki 2 0 63 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 65 km
Tateyama 3 0 73 km
Yokohama YOK unknown 0 77 km
26 0 77 km
Hyakuri 32 Mil. Paved Yes 8800 89 km

Ports

Name LOCODE Country Distance
Katsuura Ko Japan 31 km
Goi JPGOI Japan 37 km
Chiba JPCHB Japan 41 km
Anegasaki JPANE Japan 42 km
Kisarazu JPKZU Japan 50 km
Choshi JPCHO Japan 51 km
Katunan Ko Japan 55 km
Kashima JPKSM Japan 61 km
Kawasaki JPKWS Japan 67 km
Ogasawara JPOGA Japan 70 km
Tateyama JPTTY Japan 71 km
Kurihama JPKRH Japan 73 km
Tokyo JPTYO Japan 74 km
Yokosuka JPYOS Japan 75 km
Neghisi JPNGI Japan 76 km
Yokohama JPYOK Japan 76 km

Dams

Reservoir Dam Name River Year Distance
Takatakiko Takataki Yorogawa 1990 30 km
Yamakura Yamakura Yamakuragawa 1964 33 km
Kameyamako Kameyama Obitsugawa 1980 39 km
Kori Kori Korigawa 1972 52 km
Sakuma Sakuma Okuzuregawa 1990 59 km
Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995 65 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.