M 4.6 in Japan on 18 Sep 2018 08:11 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: 90.02 Km
Lat/Lon: 36.0106 , 139.7538
Event Date: 18 Sep 2018 08:11 UTC
18 Sep 2018 17:11 Local
Exposed Population:
41730000 people within 100km
Source: NEIC us2000hgaa
Inserted at: 18 Sep 2018 08:37 UTC
INFORM Coping capacity of the alert score
1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.1 0.1
us2000hgaa Scaled population (vector) 7.92  
  C1 earthquake 0.73  
  C2 earthquake -0.22  
  Country Vulnerability -0.71  
  INFORM_normalised 0.57  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1228758 0.1 18 Sep 2018 08:11 4.6M, 90.02km N/A 41.7 million (in 100km) 00:26 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 Toshima, Hojubana, Hoshubana, Uruido, Doyobu, Sekiyado, Kuki, Hinokuchi, Sairaoka, Sakai, and Maebashi.

Radius Population
100 km 41.7 million people
75 km 36.9 million people
50 km 25.2 million people
20 km 3.3 million people
10 km 750000 people
5 km 190000 people
2 km 21000 people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Toshima Saitama Japan Village - 5 km
Hojubana Saitama Japan Village - 5 km
Hoshubana Chiba Japan Village - 7 km
Uruido Saitama Japan Village - 8 km
Doyobu Ibaraki Japan Village - 9 km
Sekiyado Chiba Japan Village 30000 people 9 km
Kuki Saitama Japan Village 72000 people 10 km
Hinokuchi Saitama Japan Village - 10 km
Sairaoka Saitama Japan Village - 11 km
Sakai Ibaraki Japan Village 26000 people 11 km
Oyama Ibaraki Japan Village - 12 km
Noda Chiba Japan City 120000 people 13 km
Tsukazaki Ibaraki Japan Village - 13 km
Oigo Ibaraki Japan Village - 14 km
Kobari-Shinjika Saitama Japan Village - 15 km
Konosu Saitama Japan Village 82000 people 15 km
Matate Ibaraki Japan Village - 15 km
Kurihashi Saitama Japan Village 28000 people 15 km
Shobu Saitama Japan Village - 15 km
Washimiya Saitama Japan Village 34000 people 16 km
Yoshikawa Saitama Japan Village 60000 people 16 km
Omiya Saitama Japan City 440000 people 16 km
Kita-Hirano Saitama Japan Village - 17 km
Numakage Ibaraki Japan Village - 17 km
Omuro Saitama Japan Village - 17 km
Kutsukake Ibaraki Japan Village - 18 km
Saheita-Shinden Ibaraki Japan Village - 19 km
Kishai Saitama Japan Village - 19 km
Hiratsuka Ibaraki Japan Village - 19 km
Onna Ibaraki Japan Village - 19 km
Honden Saitama Japan Village - 20 km
Nire Ibaraki Japan Village - 20 km
Kami-aoki Saitama Japan Village - 20 km
Hirakata Saitama Japan Village - 20 km
Koga Ibaraki Japan City 57000 people 21 km
Arai Saitama Japan Village - 21 km
Kozutsumi Ibaraki Japan Village - 22 km
Ishige Ibaraki Japan Village 25000 people 22 km
Goka Ibaraki Japan Village - 22 km
Morokawa Ibaraki Japan Village - 22 km
Togawa Saitama Japan Village - 23 km
Narita-Shinden Ibaraki Japan Village - 23 km
Mitagaya Saitama Japan Village - 23 km
Kami-Naganuma Ibaraki Japan Village - 23 km
Nogi Tochigi Japan Village 27000 people 23 km
Suginoya Ibaraki Japan Village - 24 km
Yagyu Saitama Japan Village - 24 km
Ichiba Saitama Japan Village - 24 km
Kami-Wada Ibaraki Japan Village - 24 km
Sukage Saitama Japan Village - 24 km
Obari Ibaraki Japan Village - 24 km
Shimana Ibaraki Japan Village - 25 km
Shinjuku-Shinden Ibaraki Japan Village - 25 km
Sunayama Saitama Japan Village - 25 km
Owada Saitama Japan Village - 25 km
Zodo Ibaraki Japan Village - 25 km
Kako Saitama Japan Village - 26 km
Kamigo Ibaraki Japan Village - 26 km
Tsuruma Saitama Japan Village - 26 km
Kawagoe Saitama Japan City 330000 people 26 km
Minami-Izumi Tochigi Japan Village - 26 km
Itakura Gunma Japan Village - 26 km
Koya Saitama Japan Village - 27 km
Nukata Saitama Japan Village - 27 km
Shimotsuma Ibaraki Japan Village 37000 people 27 km
Takei Ibaraki Japan Village - 27 km
Kami-Namai Tochigi Japan Village - 27 km
Saitama Saitama Japan Major city 1.1 million people 27 km
Otake Saitama Japan Village - 27 km
Oashi Saitama Japan Village - 27 km
Fukizua Shinden Saitama Japan Village - 28 km
Yoshinuma Ibaraki Japan Village - 29 km
Shimo-Sudo Saitama Japan Village - 29 km
Kurokoma Ibaraki Japan Village - 29 km
Mamada Tochigi Japan Village - 29 km
Furukari Saitama Japan Village - 29 km
Yatabe Ibaraki Japan Village - 29 km
Fujioka Tochigi Japan Village 18000 people 29 km
Fukiage Saitama Japan Village 28000 people 29 km
Kami-Shingo Saitama Japan Village - 29 km
Abiko Chiba Japan City 130000 people 29 km
Akoda Gunma Japan Village - 30 km
Momiya Gunma Japan Village - 30 km
Emura Ibaraki Japan Village - 30 km
Matsudo Chiba Japan City 460000 people 30 km
Hirunuma Tochigi Japan Village - 30 km
Sekimoto Ibaraki Japan Village - 30 km
Sakunoya Ibaraki Japan Village - 31 km
Nagayatsu Saitama Japan Village - 31 km
Ozanuki Gunma Japan Village - 31 km
Nishioka Gunma Japan Village - 31 km
Takasai Ibaraki Japan Village - 31 km
Amagaya Tochigi Japan Village - 31 km
Fujishiro Ibaraki Japan Village 33000 people 31 km
Matsuyama Saitama Japan Village - 31 km
Hinosawa Ibaraki Japan Village - 32 km
Koike Tochigi Japan Village - 32 km
Wakayagi Ibaraki Japan Village - 32 km
Aoyagi Gunma Japan Village - 32 km
Katayama Saitama Japan Village - 32 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
Chiba-ken 19 0 5 km
Honda 12 0 21 km
Shimofusa 30 Civ. Paved Yes 7300 33 km
Onishi 20 0 35 km
Iruma 91 Mil. Paved Yes 6500 36 km
26 0 40 km
Chofu 41 Civ. Paved No 3200 43 km
Shimo Kolzumi 30 0 43 km
Ryugasaki 2 0 45 km
Ryugasaki South 2 0 46 km
Tachikawa 95 0 47 km
Yokota AFB OKO 139 Mil. Paved Yes 11000 47 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 51 km
Suzumenomiya 82 0 52 km
Shimoshizu 30 0 54 km
Utsunomiya QUT 102 Civ. Paved Yes 5500 57 km
Yokohama YOK unknown 0 61 km
Hyakuri 32 Mil. Paved Yes 8800 63 km
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 63 km
Katsner AAF 109 Civ. Paved No 1900 64 km
Atsugi NJA 62 Mil. Paved Yes 7900 68 km
Kisarazu 3 Mil. Paved Yes 6000 69 km
Otawara 201 0 98 km

Ports

Name LOCODE Country Distance
Tokyo JPTYO Japan 33 km
Ogasawara JPOGA Japan 37 km
Katunan Ko Japan 43 km
Kawasaki JPKWS Japan 53 km
Anegasaki JPANE Japan 55 km
Chiba JPCHB Japan 56 km
Goi JPGOI Japan 62 km
Yokohama JPYOK Japan 63 km
Neghisi JPNGI Japan 69 km
Kisarazu JPKZU Japan 71 km
Yokosuka JPYOS Japan 81 km
Kashima JPKSM Japan 86 km
Kurihama JPKRH Japan 89 km
Hitachi JPHTC Japan 95 km

Dams

Reservoir Dam Name River Year Distance
Miyukiko Gongendochosetsuchi Nakagawa 1991 13 km
Yanakako Wataraseyusuichi Watarasegawa 1989 22 km
Tamako Murayamashimo Tamagawa 2008 39 km
Sayamako Yamaguchi Tamagawa 2002 40 km
Tamako Murayamakami Tamagawa 1924 41 km
Miyazawako Miyazawatameike Koazegawa 1941 41 km
Naguriko Arima Arimagawa 1985 54 km
Tsukuiko Shiroyama Sagamigawa 1964 63 km
Sagamiko Sagami Sagamigawa 1947 67 km
Yamakura Yamakura Yamakuragawa 1964 67 km
Kannako Shimokubo Kannagawa 1968 68 km
Okutamako Ogohchi Tamagawa 1957 68 km
Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995 68 km
Kusakiko Kusaki Watarasegawa 1976 69 km
Miyagaseko Miyagase Nakatsugawa 2001 69 km
Jajanboike Kozogawa Kozogawa 1985 73 km
Ono Ono Yatagawa 1914 76 km
Chichibuko Futase Arakawa 1961 77 km
Kori Kori Korigawa 1972 81 km
Takatakiko Takataki Yorogawa 1990 81 km
Oshioko Oshio Nanmokugawa 1968 83 km
Makabechoseichi Makabe Tonegawa 1928 83 km
Chuzenjiko Chuzenji Daiyagawa 1998 84 km
Narusawako Narusawa Harunashirakawa 1950 84 km
Sonoharako Sonohara Katashinagawa 1965 87 km
Nyuko Nyu Nyukawa 1952 88 km
Higashikoyako Nishiarakawa Nishiarakawa 1967 90 km
Imaichichoseichi Imaichi Togawa 1988 91 km
Hiroseko Hirose Fuefukigawa 1974 91 km
Kameyamako Kameyama Obitsugawa 1980 92 km
Tanzawako Miho Kawauchigawa 1978 93 km
Terayama Terayama Miyakawa 1984 94 km
Kuriyamachoseichi Kuriyama Nebesawagawa 1988 94 km
Kurobe Kurobe Kinugawa 1912 96 km
Iizumishusuizeki Iizumishusuizeki Sakawagawa 1973 98 km
Marunumako Marunuma Otakigawa 1931 98 km
Yashioko Kawaji Kunugawa 1983 99 km
Kawamatako Kawamata Kinugawa 1966 99 km
Sakuma Sakuma Okuzuregawa 1990 99 km
Ikariko Ikari Ojikagawa 1956 99 km

More information

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