M 4.7 in Japan on 21 Feb 2014 22:31 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: 4.7M
Depth: 58.29 Km
Lat/Lon: 35.9678 , 140.4214
Event Date: 21 Feb 2014 22:31 UTC
22 Feb 2014 07:31 Local
Exposed Population:
34375932 people within 100km
Source: NEIC
Inserted at: 21 Feb 2014 22:59 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.1 0.1
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
1042083 0.1 21 Feb 2014 22:31 4.7M, 58.29km N/A 34.4 million (in 100km) 00:28 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 Koda, Itako, Oyama, Aso, Kansaki, Oshita, Edosaki, Kubo, Inoue, Yaida, and Yokohama.

Radius Population
100 km 33.8 million people
75 km 18.7 million people
50 km 6.2 million people
20 km 330000 people
10 km 66000 people
5 km 11000 people
2 km 2800 people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Koda Ibaraki Japan Village - 4 km
Itako Ibaraki Japan Village 25000 people 6 km
Oyama Ibaraki Japan Village - 7 km
Aso Ibaraki Japan Village - 7 km
Kansaki Chiba Japan Village - 7 km
Oshita Ibaraki Japan Village - 9 km
Edosaki Ibaraki Japan Village 21000 people 9 km
Kubo Ibaraki Japan Village - 10 km
Inoue Ibaraki Japan Village - 10 km
Yaida Ibaraki Japan Village - 10 km
Aonuma Ibaraki Japan Village - 11 km
Nekoya Ibaraki Japan Village - 12 km
Idako Ibaraki Japan Village - 12 km
Ushibori Ibaraki Japan Village - 12 km
Aruga Ibaraki Japan Village - 12 km
Kihara Ibaraki Japan Village - 13 km
Obata Ibaraki Japan Village - 13 km
Negoya Ibaraki Japan Village - 14 km
Namegawa Chiba Japan Village - 14 km
Yamada Ibaraki Japan Village - 15 km
Owada Ibaraki Japan Village - 15 km
Yoshikawa Ibaraki Japan Village - 15 km
Sakihama Ibaraki Japan Village - 16 km
Kashiwazaki Ibaraki Japan Village - 16 km
Kofunatsu Ibaraki Japan Village - 16 km
Owana Ibaraki Japan Village - 17 km
Ino Chiba Japan Village - 17 km
Narage Ibaraki Japan Village - 17 km
Fuda Ibaraki Japan Village - 17 km
Obunatsu Ibaraki Japan Village - 18 km
Omi Ibaraki Japan Village - 18 km
Shishikura Ibaraki Japan Village - 19 km
Kyuchu Ibaraki Japan Village - 19 km
Kashima Ibaraki Japan Village 65000 people 19 km
Taiyo Ibaraki Japan Village - 19 km
Hangu Ibaraki Japan Village - 20 km
Takata Ibaraki Japan Village - 20 km
Kamiyama Ibaraki Japan Village - 20 km
Ryugasaki Chiba Japan Village 85000 people 20 km
Iioka Ibaraki Japan Village - 21 km
Hamatsuga Ibaraki Japan Village - 21 km
Aotsuka Ibaraki Japan Village - 21 km
Wakaguri Ibaraki Japan Village - 21 km
Koya Ibaraki Japan Village - 21 km
Omigawa Chiba Japan City 25000 people 21 km
Ryugaski Ibaraki Japan Village - 21 km
Kyochikama Ibaraki Japan Village - 22 km
Jikkoku Ibaraki Japan Village - 22 km
Ikku Ibaraki Japan Village - 22 km
Kai-Tamari Ibaraki Japan Village - 23 km
Muyokama Ibaraki Japan Village - 23 km
Tonouchi Ibaraki Japan Village - 23 km
Tamatsukuri Ibaraki Japan Village - 23 km
Ogawa Ibaraki Japan Village - 23 km
Iina Ibaraki Japan Village - 24 km
Dainigorisawa Ibaraki Japan Village - 24 km
Torinosu Ibaraki Japan Village - 24 km
Arakawa-Oki Ibaraki Japan Village - 24 km
Nakanuki Ibaraki Japan Village - 25 km
Narita Chiba Japan City 100000 people 25 km
Okunoya Ibaraki Japan Village - 26 km
Otake Ibaraki Japan Village - 26 km
Miyata Ibaraki Japan Village - 26 km
Ishiyatsudo Ibaraki Japan Village - 26 km
Ushiku Ibaraki Japan Village 79000 people 26 km
Ambo Ibaraki Japan Village - 26 km
Tako Chiba Japan City - 26 km
Fukawa Ibaraki Japan Village - 27 km
Tsuchida Ibaraki Japan Village - 27 km
Ishioka Ibaraki Japan Village 52000 people 27 km
Momiji Ibaraki Japan Village - 27 km
Hokota Ibaraki Japan Village 28000 people 28 km
Sanga Ibaraki Japan Village - 28 km
Funaki Ibaraki Japan Village - 29 km
Katsuori Ibaraki Japan Village - 29 km
Takehara Ibaraki Japan Village - 29 km
Hinosawa Ibaraki Japan Village - 29 km
Naka-Shizuku Ibaraki Japan Village - 30 km
Sakura Ibaraki Japan Village - 30 km
Fujisawa Ibaraki Japan Village - 30 km
Hongo Ibaraki Japan Village - 30 km
Chiba-nyutaun Chiba Japan Village - 30 km
Katakura Ibaraki Japan Village - 30 km
Kami-Hirooka Ibaraki Japan Village - 30 km
Fujishiro Ibaraki Japan Village 33000 people 30 km
Noda Ibaraki Japan Village - 30 km
Torihada Ibaraki Japan Village - 31 km
Asahi Ibaraki Japan Village - 31 km
Sawabe Ibaraki Japan Village - 31 km
Omori Chiba Japan Village - 31 km
Yatabe Ibaraki Japan Village - 32 km
Sakura Chiba Japan City 180000 people 32 km
Akiba Ibaraki Japan Village - 33 km
Ebisawa Ibaraki Japan Village - 33 km
Mazunochi Ibaraki Japan Village - 33 km
Hatori Ibaraki Japan Village - 33 km
Kamigama Ibaraki Japan Village - 34 km
Nagasu Ibaraki Japan Village - 34 km
Kawamata Ibaraki Japan Village - 34 km
Oda Ibaraki Japan Village - 34 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
Ryugasaki 2 0 17 km
Ryugasaki South 2 0 20 km
26 0 22 km
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 23 km
Hyakuri 32 Mil. Paved Yes 8800 24 km
Shimofusa 30 Civ. Paved Yes 7300 42 km
Shimoshizu 30 0 42 km
Chiba-ken 19 0 56 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 74 km
Suzumenomiya 82 0 75 km
Kisarazu 3 Mil. Paved Yes 6000 78 km
Utsunomiya QUT 102 Civ. Paved Yes 5500 78 km
Honda 12 0 81 km
Chofu 41 Civ. Paved No 3200 87 km
Onishi 20 0 89 km
Yokohama YOK unknown 0 90 km
Iruma 91 Mil. Paved Yes 6500 92 km
Tachikawa 95 0 97 km
Shimo Kolzumi 30 0 98 km
Yokota AFB OKO 139 Mil. Paved Yes 11000 100 km

Ports

Name LOCODE Country Distance
Kashima JPKSM Japan 26 km
Choshi JPCHO Japan 45 km
Anegasaki JPANE Japan 49 km
Chiba JPCHB Japan 50 km
Katunan Ko Japan 51 km
Goi JPGOI Japan 56 km
Hitachi JPHTC Japan 61 km
Ogasawara JPOGA Japan 65 km
Tokyo JPTYO Japan 66 km
Kawasaki JPKWS Japan 77 km
Kisarazu JPKZU Japan 79 km
Yokohama JPYOK Japan 91 km
Katsuura Ko Japan 93 km
Neghisi JPNGI Japan 95 km

Dams

Reservoir Dam Name River Year Distance
Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995 8 km
Jajanboike Kozogawa Kozogawa 1985 50 km
Yamakura Yamakura Yamakuragawa 1964 60 km
Miyukiko Gongendochosetsuchi Nakagawa 1991 66 km
Yanakako Wataraseyusuichi Watarasegawa 1989 72 km
Takatakiko Takataki Yorogawa 1990 72 km
Kameyamako Kameyama Obitsugawa 1980 87 km
Kori Kori Korigawa 1972 88 km
Tamako Murayamashimo Tamagawa 2008 92 km
Sayamako Yamaguchi Tamagawa 2002 93 km
Tamako Murayamakami Tamagawa 1924 94 km
Miyazawako Miyazawatameike Koazegawa 1941 99 km

Nuclear plants

Name Country Reactors Distance
TOKAI JAPAN 3 57 km

More information

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