M 4.6 in Japan on 13 Dec 2012 11:56 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: 62.6 Km
Lat/Lon: 35.5723 , 140.193
Event Date: 13 Dec 2012 11:56 UTC
13 Dec 2012 20:56 Local
Exposed Population:
36430000 people within 100km
Source: NEIC usc000e9cc
Inserted at: 13 Dec 2012 13:32 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc000e9cc 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
121414 0.5 13 Dec 2012 11:56 4.6M, 62.6km N/A 36.4 million (in 100km) 01:36 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 Chiba, Oami, Goi, Togane, Mobara, Ushiku, Chonan, Anegasaki, Sakura, Naruto, and Mito.

Radius Population
100 km 35.2 million people
75 km 24.1 million people
50 km 8.3 million people
20 km 1.6 million people
10 km 370000 people
5 km 96000 people
2 km 25000 people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Chiba Chiba Japan Major city 920000 people 10 km
Oami Chiba Japan Village - 10 km
Goi Chiba Japan Village - 11 km
Togane Chiba Japan Village 55000 people 16 km
Mobara Chiba Japan City 96000 people 16 km
Ushiku Chiba Japan Village - 18 km
Chonan Chiba Japan Village - 18 km
Anegasaki Chiba Japan Village - 19 km
Sakura Chiba Japan City 180000 people 19 km
Naruto Chiba Japan City 22000 people 19 km
Katakai Chiba Japan City - 22 km
Ichinomiya Chiba Japan Village - 24 km
Chiba-nyutaun Chiba Japan Village - 25 km
Hasunuma Chiba Japan Village - 26 km
Narita Chiba Japan City 100000 people 26 km
Funabashi Chiba Japan City 560000 people 26 km
Yokoshiba Chiba Japan Village - 27 km
Kamagaya Chiba Japan City 110000 people 29 km
Kisarazu Chiba Japan City 120000 people 31 km
Kururi Chiba Japan Village - 31 km
Tako Chiba Japan City - 31 km
Ichikawa Chiba Japan City 460000 people 32 km
Omori Chiba Japan Village - 32 km
Ryugasaki Chiba Japan Village 85000 people 33 km
Ino Chiba Japan Village - 35 km
Fukawa Ibaraki Japan Village - 35 km
Matsudo Chiba Japan City 460000 people 36 km
Namegawa Chiba Japan Village - 36 km
Fujioayashi Chiba Japan Village - 37 km
Tokyo Tokyo Japan Capital 8.1 million people 37 km
Ohara Chiba Japan City 20000 people 38 km
Kimitsu Chiba Japan Village 92000 people 39 km
Abiko Chiba Japan City 130000 people 40 km
Ryugaski Ibaraki Japan Village - 40 km
Kansaki Chiba Japan Village - 43 km
Fujishiro Ibaraki Japan Village 33000 people 44 km
Futtso Chiba Japan Village - 44 km
Asahi Yokaichiba Chiba Japan Village - 45 km
Katsuura Chiba Japan Village 22000 people 45 km
Golanda Tokyo Japan Village - 45 km
Edosaki Ibaraki Japan Village 21000 people 46 km
Kawasaki Kanagawa Japan Major city 1.3 million people 46 km
Ushiku Ibaraki Japan Village 79000 people 47 km
Minato Chiba Japan Village - 47 km
Koda Ibaraki Japan Village - 47 km
Kamogawa Chiba Japan Village 29000 people 50 km
Omigawa Chiba Japan City 25000 people 50 km
Jikkoku Ibaraki Japan Village - 50 km
Obari Ibaraki Japan Village - 50 km
Yoshikawa Saitama Japan Village 60000 people 50 km
Wakaguri Ibaraki Japan Village - 51 km
Kobata Chiba Japan Village - 51 km
Kihara Ibaraki Japan Village - 53 km
Idako Ibaraki Japan Village - 53 km
Oyama Ibaraki Japan Village - 53 km
Hinosawa Ibaraki Japan Village - 53 km
Ikku Ibaraki Japan Village - 53 km
Asagaya Tokyo Japan Village - 53 km
Yaida Ibaraki Japan Village - 53 km
Noda Chiba Japan City 120000 people 54 km
Arakawa-Oki Ibaraki Japan Village - 54 km
Kami-Naganuma Ibaraki Japan Village - 54 km
Yokohama Kanagawa Japan Major city 3.6 million people 54 km
Yatabe Ibaraki Japan Village - 54 km
Itako Ibaraki Japan Village 25000 people 55 km
Kami-aoki Saitama Japan Village - 55 km
Ushibori Ibaraki Japan Village - 56 km
Aso Ibaraki Japan Village - 56 km
Okunoya Ibaraki Japan Village - 57 km
Sakihama Ibaraki Japan Village - 58 km
Kami-Hirooka Ibaraki Japan Village - 58 km
Yokosuka Kanagawa Japan City 420000 people 58 km
Yatabe Ibaraki Japan Village - 59 km
Aruga Ibaraki Japan Village - 59 km
Oshita Ibaraki Japan Village - 59 km
Choshi Chiba Japan City 84000 people 59 km
Wada Chiba Japan Village - 59 km
Obunatsu Ibaraki Japan Village - 59 km
Nekoya Ibaraki Japan Village - 59 km
Oyama Ibaraki Japan Village - 60 km
Kashima Ibaraki Japan Village 65000 people 60 km
Kyuchu Ibaraki Japan Village - 60 km
Kubo Ibaraki Japan Village - 60 km
Shimana Ibaraki Japan Village - 60 km
Inoue Ibaraki Japan Village - 60 km
Owada Ibaraki Japan Village - 60 km
Aonuma Ibaraki Japan Village - 60 km
Tokawacho Chiba Japan Village - 61 km
Chofu Tokyo Japan City 200000 people 61 km
Katsuyama Chiba Japan Village - 61 km
Inuwaka Chiba Japan Village - 61 km
Negoya Ibaraki Japan Village - 61 km
Goka Ibaraki Japan Village - 62 km
Sakura Ibaraki Japan Village - 62 km
Kashiwazaki Ibaraki Japan Village - 62 km
Katayama Saitama Japan Village - 63 km
Obata Ibaraki Japan Village - 63 km
Nakanuki Ibaraki Japan Village - 63 km
Matate Ibaraki Japan Village - 64 km
Hojubana Saitama Japan Village - 64 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 12 km
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 29 km
Kisarazu 3 Mil. Paved Yes 6000 32 km
Shimofusa 30 Civ. Paved Yes 7300 33 km
Ryugasaki South 2 0 36 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 39 km
Ryugasaki 2 0 40 km
Yokohama YOK unknown 0 53 km
26 0 54 km
Chiba-ken 19 0 63 km
Chofu 41 Civ. Paved No 3200 63 km
Atsugi NJA 62 Mil. Paved Yes 7900 70 km
Tateyama 3 0 72 km
Hyakuri 32 Mil. Paved Yes 8800 72 km
Katsner AAF 109 Civ. Paved No 1900 74 km
Tachikawa 95 0 75 km
Honda 12 0 78 km
Iruma 91 Mil. Paved Yes 6500 79 km
Yokota AFB OKO 139 Mil. Paved Yes 11000 81 km

Ports

Name LOCODE Country Distance
Goi JPGOI Japan 10 km
Chiba JPCHB Japan 11 km
Anegasaki JPANE Japan 12 km
Katunan Ko Japan 25 km
Kisarazu JPKZU Japan 32 km
Ogasawara JPOGA Japan 40 km
Kawasaki JPKWS Japan 41 km
Tokyo JPTYO Japan 45 km
Katsuura Ko Japan 47 km
Yokohama JPYOK Japan 53 km
Neghisi JPNGI Japan 55 km
Yokosuka JPYOS Japan 58 km
Kashima JPKSM Japan 59 km
Choshi JPCHO Japan 60 km
Kurihama JPKRH Japan 60 km
Tateyama JPTTY Japan 70 km

Dams

Reservoir Dam Name River Year Distance
Yamakura Yamakura Yamakuragawa 1964 10 km
Takatakiko Takataki Yorogawa 1990 22 km
Kameyamako Kameyama Obitsugawa 1980 37 km
Kori Kori Korigawa 1972 39 km
Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995 53 km
Sakuma Sakuma Okuzuregawa 1990 55 km
Tamako Murayamashimo Tamagawa 2008 74 km
Tamako Murayamakami Tamagawa 1924 76 km
Sayamako Yamaguchi Tamagawa 2002 77 km
Miyukiko Gongendochosetsuchi Nakagawa 1991 77 km
Yanakako Wataraseyusuichi Watarasegawa 1989 87 km
Jajanboike Kozogawa Kozogawa 1985 98 km

More information

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