M 4.9 in Japan on 25 Jan 2015 22:20 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: 4.9M
Depth: 25.51 Km
Lat/Lon: 35.8523 , 140.4907
Event Date: 25 Jan 2015 22:20 UTC
26 Jan 2015 07:20 Local
Exposed Population:
31804832 people within 100km
Source: NEIC
Inserted at: 25 Jan 2015 22:41 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.2 0.2
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
1070355 0.2 25 Jan 2015 22:20 4.9M, 25.51km N/A 31.8 million (in 100km) 00:21 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 Ino, Kansaki, Idako, Omigawa, Tako, Namegawa, Ushibori, Koda, Itako, Narita, and Saitama.

Radius Population
100 km 33 million people
75 km 16.2 million people
50 km 5.4 million people
20 km 500000 people
10 km 88000 people
5 km 33000 people
2 km 2300 people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Ino Chiba Japan Village - 8 km
Kansaki Chiba Japan Village - 9 km
Idako Ibaraki Japan Village - 11 km
Omigawa Chiba Japan City 25000 people 11 km
Tako Chiba Japan City - 13 km
Namegawa Chiba Japan Village - 14 km
Ushibori Ibaraki Japan Village - 14 km
Koda Ibaraki Japan Village - 14 km
Itako Ibaraki Japan Village 25000 people 15 km
Narita Chiba Japan City 100000 people 16 km
Aso Ibaraki Japan Village - 17 km
Obunatsu Ibaraki Japan Village - 17 km
Okunoya Ibaraki Japan Village - 18 km
Kyuchu Ibaraki Japan Village - 18 km
Kashima Ibaraki Japan Village 65000 people 18 km
Nekoya Ibaraki Japan Village - 18 km
Edosaki Ibaraki Japan Village 21000 people 19 km
Negoya Ibaraki Japan Village - 20 km
Aonuma Ibaraki Japan Village - 20 km
Oyama Ibaraki Japan Village - 21 km
Asahi Yokaichiba Chiba Japan Village - 21 km
Oshita Ibaraki Japan Village - 21 km
Ryugasaki Chiba Japan Village 85000 people 21 km
Yokoshiba Chiba Japan Village - 22 km
Narage Ibaraki Japan Village - 23 km
Kubo Ibaraki Japan Village - 23 km
Omi Ibaraki Japan Village - 23 km
Inoue Ibaraki Japan Village - 23 km
Koya Ibaraki Japan Village - 23 km
Yoshikawa Ibaraki Japan Village - 24 km
Yaida Ibaraki Japan Village - 24 km
Yamada Ibaraki Japan Village - 24 km
Obata Ibaraki Japan Village - 25 km
Aotsuka Ibaraki Japan Village - 25 km
Kihara Ibaraki Japan Village - 25 km
Hamatsuga Ibaraki Japan Village - 26 km
Fuda Ibaraki Japan Village - 26 km
Aruga Ibaraki Japan Village - 26 km
Yatabe Ibaraki Japan Village - 27 km
Kofunatsu Ibaraki Japan Village - 27 km
Ryugaski Ibaraki Japan Village - 27 km
Sakura Chiba Japan City 180000 people 27 km
Taiyo Ibaraki Japan Village - 28 km
Chiba-nyutaun Chiba Japan Village - 28 km
Naruto Chiba Japan City 22000 people 28 km
Kyochikama Ibaraki Japan Village - 29 km
Hasunuma Chiba Japan Village - 29 km
Owada Ibaraki Japan Village - 29 km
Owana Ibaraki Japan Village - 29 km
Sakihama Ibaraki Japan Village - 29 km
Kashiwazaki Ibaraki Japan Village - 30 km
Fukawa Ibaraki Japan Village - 30 km
Takata Ibaraki Japan Village - 31 km
Muyokama Ibaraki Japan Village - 31 km
Wakaguri Ibaraki Japan Village - 32 km
Jikkoku Ibaraki Japan Village - 32 km
Choshi Chiba Japan City 84000 people 32 km
Dainigorisawa Ibaraki Japan Village - 33 km
Shishikura Ibaraki Japan Village - 33 km
Kamiyama Ibaraki Japan Village - 33 km
Ikku Ibaraki Japan Village - 33 km
Hangu Ibaraki Japan Village - 34 km
Omori Chiba Japan Village - 34 km
Ushiku Ibaraki Japan Village 79000 people 35 km
Togane Chiba Japan Village 55000 people 35 km
Iioka Ibaraki Japan Village - 35 km
Otake Ibaraki Japan Village - 35 km
Iina Ibaraki Japan Village - 35 km
Arakawa-Oki Ibaraki Japan Village - 36 km
Katakai Chiba Japan City - 37 km
Torinosu Ibaraki Japan Village - 37 km
Tonouchi Ibaraki Japan Village - 37 km
Kai-Tamari Ibaraki Japan Village - 37 km
Tokawacho Chiba Japan Village - 37 km
Ambo Ibaraki Japan Village - 37 km
Tamatsukuri Ibaraki Japan Village - 37 km
Fujishiro Ibaraki Japan Village 33000 people 37 km
Inuwaka Chiba Japan Village - 37 km
Ogawa Ibaraki Japan Village - 37 km
Hokota Ibaraki Japan Village 28000 people 38 km
Ishiyatsudo Ibaraki Japan Village - 38 km
Katsuori Ibaraki Japan Village - 39 km
Nakanuki Ibaraki Japan Village - 39 km
Hinosawa Ibaraki Japan Village - 40 km
Miyata Ibaraki Japan Village - 40 km
Oami Chiba Japan Village - 40 km
Momiji Ibaraki Japan Village - 41 km
Noda Ibaraki Japan Village - 41 km
Tsuchida Ibaraki Japan Village - 41 km
Funaki Ibaraki Japan Village - 41 km
Abiko Chiba Japan City 130000 people 41 km
Ishioka Ibaraki Japan Village 52000 people 42 km
Sanga Ibaraki Japan Village - 42 km
Kami-Hirooka Ibaraki Japan Village - 42 km
Asahi Ibaraki Japan Village - 42 km
Yatabe Ibaraki Japan Village - 42 km
Sakura Ibaraki Japan Village - 42 km
Fujisawa Ibaraki Japan Village - 43 km
Chiba Chiba Japan Major city 920000 people 43 km
Takehara Ibaraki Japan Village - 43 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
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 14 km
Ryugasaki South 2 0 23 km
Ryugasaki 2 0 24 km
26 0 34 km
Hyakuri 32 Mil. Paved Yes 8800 37 km
Shimoshizu 30 0 37 km
Shimofusa 30 Civ. Paved Yes 7300 44 km
Chiba-ken 19 0 64 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 72 km
Kisarazu 3 Mil. Paved Yes 6000 73 km
Honda 12 0 89 km
Yokohama YOK unknown 0 89 km
Suzumenomiya 82 0 89 km
Chofu 41 Civ. Paved No 3200 90 km
Utsunomiya QUT 102 Civ. Paved Yes 5500 92 km
Iruma 91 Mil. Paved Yes 6500 98 km
Tachikawa 95 0 100 km
Onishi 20 0 100 km

Ports

Name LOCODE Country Distance
Kashima JPKSM Japan 19 km
Choshi JPCHO Japan 33 km
Chiba JPCHB Japan 44 km
Anegasaki JPANE Japan 45 km
Goi JPGOI Japan 50 km
Katunan Ko Japan 50 km
Ogasawara JPOGA Japan 66 km
Tokyo JPTYO Japan 68 km
Hitachi JPHTC Japan 72 km
Kisarazu JPKZU Japan 73 km
Kawasaki JPKWS Japan 75 km
Katsuura Ko Japan 81 km
Yokohama JPYOK Japan 89 km
Neghisi JPNGI Japan 92 km
Yokosuka JPYOS Japan 98 km

Dams

Reservoir Dam Name River Year Distance
Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995 12 km
Yamakura Yamakura Yamakuragawa 1964 52 km
Takatakiko Takataki Yorogawa 1990 63 km
Jajanboike Kozogawa Kozogawa 1985 64 km
Miyukiko Gongendochosetsuchi Nakagawa 1991 76 km
Kameyamako Kameyama Obitsugawa 1980 78 km
Kori Kori Korigawa 1972 81 km
Yanakako Wataraseyusuichi Watarasegawa 1989 83 km
Tamako Murayamashimo Tamagawa 2008 96 km
Sakuma Sakuma Okuzuregawa 1990 97 km
Tamako Murayamakami Tamagawa 1924 98 km
Sayamako Yamaguchi Tamagawa 2002 98 km

Nuclear plants

Name Country Reactors Distance
TOKAI JAPAN 3 69 km

More information

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