M 4.6 in Japan on 12 Apr 2011 19:02 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: Km
Lat/Lon: 37.1125 , 140.449
Event Date: 12 Apr 2011 19:02 UTC
13 Apr 2011 04:02 Local
Exposed Population:
4850000 people within 100km
Source: NEIC usc0002pam
Inserted at: 12 Apr 2011 20:19 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
usc0002pam 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
107101 0.5 12 Apr 2011 19:02 4.6M, 45.6km N/A 4.8 million (in 100km) 01:16 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 Tohoku (population 9,984,608) . The nearest places are Satoshiraishi, Fukuda, Itabashi, Ishikawa, Asakawa, Sawai, Sakaji, Wagu, Sakadare, Tokura, and Mito.

Radius Population
100 km 4.8 million people
75 km 2.7 million people
50 km 1.4 million people
20 km 170000 people
10 km 45000 people
5 km 16000 people
2 km <1000 people

Affected Provinces

Region Province Country Population
Tohoku Japan 10 million people
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Satoshiraishi Fukushima Japan Village - 2 km
Fukuda Fukushima Japan Village - 3 km
Itabashi Fukushima Japan Village - 3 km
Ishikawa Fukushima Japan Village 18000 people 4 km
Asakawa Fukushima Japan Village - 4 km
Sawai Fukushima Japan Village - 5 km
Sakaji Fukushima Japan Village - 5 km
Wagu Fukushima Japan Village - 6 km
Sakadare Fukushima Japan Village - 7 km
Tokura Fukushima Japan Village - 8 km
Nakada Fukushima Japan Village - 8 km
Tsutsumi Fukushima Japan Village - 8 km
Kamanoko Fukushima Japan Village - 9 km
Kawarada Fukushima Japan Village - 9 km
Sakasakawa Fukushima Japan Village - 9 km
Takanuki Fukushima Japan Village - 9 km
Yamada Fukushima Japan Village - 9 km
Akasaka-Nakano Fukushima Japan Village - 10 km
Fukawado Fukushima Japan Village - 10 km
Kand Fukushima Japan Village - 10 km
Nakahata Fukushima Japan Village - 11 km
Odaka Fukushima Japan Village - 11 km
Tanagura Fukushima Japan Village - 11 km
Kuretsubo Fukushima Japan Village - 11 km
Matsukawa Fukushima Japan Village - 11 km
Tomita Fukushima Japan Village - 11 km
Okudaira Fukushima Japan Village - 11 km
Warabinokusa Fukushima Japan Village - 12 km
Sanjome Fukushima Japan Village - 12 km
Tomioka Fukushima Japan Village - 13 km
Yamagani Fukushima Japan Village - 14 km
Tajima Fukushima Japan Village - 14 km
Daibara Fukushima Japan Village - 14 km
Eryuda Fukushima Japan Village - 14 km
Sekiguchi Fukushima Japan Village - 14 km
Kanayama Fukushima Japan Village - 14 km
Yotsuji-Shinden Fukushima Japan Village - 15 km
Izumizaki Fukushima Japan Village - 15 km
Yawata Fukushima Japan Village - 15 km
Kitakata Fukushima Japan Village - 15 km
Oguri Fukushima Japan Village - 15 km
Fumase Fukushima Japan Village - 16 km
Kita-Yamamota Fukushima Japan Village - 16 km
Banzawa Fukushima Japan Village - 16 km
Ome Fukushima Japan Village - 17 km
Kasaishi Fukushima Japan Village - 17 km
Yamakoya Fukushima Japan Village - 17 km
Sonodaira Fukushima Japan Village - 17 km
Kotagawa Fukushima Japan Village - 17 km
Kami-misaka Fukushima Japan Village - 17 km
Inugami Fukushima Japan Village - 17 km
Kitahara Fukushima Japan Village - 18 km
Kamiyomogita Fukushima Japan Village - 18 km
Nita Fukushima Japan Village - 18 km
Hanawa Fukushima Japan Village - 18 km
Kayane Fukushima Japan Village - 18 km
Shimoshingo Fukushima Japan Village - 19 km
Tashiro Fukushima Japan Village - 19 km
Shinden Fukushima Japan Village - 19 km
Akagona Fukushima Japan Village - 19 km
Iitoyo Fukushima Japan Village - 19 km
Ohata Fukushima Japan Village - 19 km
Shioda Fukushima Japan Village - 19 km
Hatajuku Fukushima Japan Village - 20 km
Kami-Ichigaya Fukushima Japan Village - 20 km
Kaidomari Fukushima Japan Village - 20 km
Machiya Fukushima Japan Village - 21 km
Gokiarai Fukushima Japan Village - 21 km
Kurosuke Fukushima Japan Village - 21 km
Tamokami Fukushima Japan Village - 21 km
Shirakawa Fukushima Japan Village 48000 people 21 km
Kyuraishi Fukushima Japan Village - 21 km
Toyochi Fukushima Japan Village - 21 km
Tozura Fukushima Japan Village - 22 km
Nagakubo Fukushima Japan Village - 22 km
Oiwake Tochigi Japan Village - 22 km
Tochimoto Fukushima Japan Village - 22 km
Matsuzuka Fukushima Japan Village - 22 km
Suzugauchi Fukushima Japan Village - 22 km
Nagura Fukushima Japan Village - 23 km
Shirasaka Fukushima Japan Village - 23 km
Shichimagari Fukushima Japan Village - 23 km
Shioniwa Fukushima Japan Village - 23 km
Yujimatamae Fukushima Japan Village - 23 km
Tsuchibashi Fukushima Japan Village - 23 km
Manahata Fukushima Japan Village - 24 km
Kutsuishi Tochigi Japan Village - 24 km
Kinosaki Fukushima Japan Village - 24 km
Shimo-Ishii Fukushima Japan Village - 24 km
Moriyama Fukushima Japan Village - 24 km
Nakadera Fukushima Japan Village - 24 km
Shimo-Misaka Fukushima Japan Village - 24 km
Kumado Fukushima Japan Village - 25 km
Nijibu Fukushima Japan Village - 25 km
Fukunda Fukushima Japan Village - 25 km
Shionohira Fukushima Japan Village - 25 km
Yama-Ogawa Ibaraki Japan Village - 25 km
Muronuki Fukushima Japan Village - 25 km
Futta Fukushima Japan Village - 25 km
Iritono Fukushima Japan Village - 25 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
Fukushima FKS 372 Civ. Paved Yes 8200 13 km
Otawara 201 0 46 km
Utsunomiya QUT 102 Civ. Paved Yes 5500 84 km
Suzumenomiya 82 0 88 km

Ports

Name LOCODE Country Distance
Onahama JPONA Japan 45 km
Hitachi JPHTC Japan 70 km
Soma JPSMA Japan 92 km

Dams

Reservoir Dam Name River Year Distance
Bobatako Sengozawa Kitasugawa 1974 9 km
Takashibako Takashiba Samekawa 1961 30 km
Fujinumachosuichi Fujimuna Ebanagawa 1948 31 km
Shitokiko Shitoki Shitokigawa 1983 33 km
Fukadachoseichi Fukadachoseichi Tadanogawa 1982 35 km
Mizunuma Mizunuma Hanazonokawa 1966 35 km
Hatoriko Hatori Tsurunumagawa 1955 37 km
Miyamako Miyama Nakagawa 1973 49 km
Sakashita Sakashita Okawaragawa 1973 53 km
Shiobara Shiobara Hokigawa 1978 53 km
Sabigawa Sabigawa Sabigawa 1994 53 km
Yoshigadaira Yoshigadaira Harakawa 1970 54 km
Wakasatoko Okawa Agagawa 1987 54 km
Ouchi Ouchi Onogawa 1991 57 km
Yunoiriko Higashiyama Yugawa 1982 58 km
Ogaki Ogaki Ukedogawa 1985 59 km
Terayama Terayama Miyakawa 1984 60 km
Higashikoyako Nishiarakawa Nishiarakawa 1967 66 km
Yokokawa Yokokawa Otagawa 1983 67 km
Takanokura Takanokura Mizunashigawa 1975 69 km
Ikariko Ikari Ojikagawa 1956 70 km
Yashioko Kawaji Kunugawa 1983 71 km
Kuriyamachoseichi Kuriyama Nebesawagawa 1988 76 km
Imaichichoseichi Imaichi Togawa 1988 77 km
Jajanboike Kozogawa Kozogawa 1985 77 km
Tamanotameike Tamano Udagawa 1945 78 km
Sekishiba Sekishiba Ubadogawa 1958 78 km
Kurobe Kurobe Kinugawa 1912 80 km
Nicchuhizawako Nicchu Oshikirigawa 1991 86 km
Kawamatako Kawamata Kinugawa 1966 87 km
Houjonoumi Mizukubo Kariyasugawa 1971 87 km
1991 94 km
Chuzenjiko Chuzenji Daiyagawa 1998 94 km

Nuclear plants

Name Country Reactors Distance
FUKUSHIMA-DAINI JAPAN 4 57 km
FUKUSHIMA-DAIICHI JAPAN 6 62 km
TOKAI JAPAN 3 74 km

More information

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