M 4.5 in Japan on 23 Oct 2004 09:28 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: 4.5M
Depth: Km
Lat/Lon: 37.22 , 138.75
Event Date: 23 Oct 2004 09:28 UTC
23 Oct 2004 18:28 Local
Exposed Population:
3500000 people within 100km
Source: NEIC
Inserted at: 27 Oct 2004 18:40 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0.5 0.5
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
8382 0.5 23 Oct 2004 09:28 4.5M, 10km N/A 3.5 million (in 100km) 4d 09:11 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 Noguchi, Kitayama, Imosaka, Himizo, Ko-Jirakura, Ueno, Kami-Shinden, Akatani, Fuyui, Nakajo, and Maebashi.

Radius Population
100 km 3.9 million people
75 km 1.8 million people
50 km 1000000 people
20 km 180000 people
10 km 41000 people
5 km 9600 people
2 km 1100 people

Affected Provinces

Region Province Country Population
Tohoku Japan 10 million people

Affected populated places

Name Region Province Country City class Population Distance
Noguchi Niigata Japan Village - 1 km
Kitayama Niigata Japan Village - 2 km
Imosaka Niigata Japan Village - 2 km
Himizo Niigata Japan Village - 3 km
Ko-Jirakura Niigata Japan Village - 3 km
Ueno Niigata Japan Village - 5 km
Kami-Shinden Niigata Japan Village - 5 km
Akatani Niigata Japan Village - 6 km
Fuyui Niigata Japan Village - 6 km
Nakajo Niigata Japan Village - 7 km
Yamanota Niigata Japan Village - 7 km
Ikenotaira Niigata Japan Village - 7 km
Muroshima Niigata Japan Village - 7 km
Shiodono Niigata Japan Village - 8 km
Toaoroki Niigata Japan Village - 8 km
Senju Niigata Japan Village - 8 km
Kodaka Niigata Japan Village - 9 km
Koizumi Niigata Japan Village - 9 km
Futago Niigata Japan Village - 9 km
Oguni Niigata Japan Village - 9 km
Ikedani Niigata Japan Village - 9 km
Nihonyagani Niigata Japan Village - 9 km
Ojiya Niigata Japan Village 40000 people 9 km
Osawa Niigata Japan Village - 9 km
Tochigahara Niigata Japan Village - 10 km
Takayanagi Niigata Japan Village - 10 km
Ogata Niigata Japan Village - 10 km
Okanomochi Niigata Japan Village - 10 km
Bijoki Niigata Japan Village - 11 km
Shibakura Niigata Japan Village - 11 km
Nanokamachi Niigata Japan Village - 11 km
Yama-Yokosawa Niigata Japan Village - 11 km
Tajima Niigata Japan Village - 12 km
Tsujimata Niigata Japan Village - 12 km
Kawaguchi Niigata Japan Village - 12 km
Myogayama Niigata Japan Village - 12 km
Aikawa Niigata Japan Village - 12 km
Shimizu Niigata Japan Village - 12 km
Chiyazawa Niigata Japan Village - 12 km
Isonobe Niigata Japan Village - 12 km
Sanada Niigata Japan Village - 13 km
Hara Niigata Japan Village - 13 km
Morichika Niigata Japan Village - 13 km
Matsudai Niigata Japan Village - 13 km
Doichi Niigata Japan Village - 13 km
Araya Niigata Japan Village - 13 km
Kita-jo Niigata Japan Village - 13 km
Funayama Niigata Japan Village - 13 km
Tsubono Niigata Japan Village - 13 km
Kizawa Niigata Japan Village - 14 km
Sugakari Niigata Japan Village - 14 km
Tsukanoyama Niigata Japan Village - 14 km
Suganuma Niigata Japan Village - 14 km
Shindoshima Niigata Japan Village - 14 km
Kishi-Karekimata Niigata Japan Village - 14 km
Sugata Niigata Japan Village - 14 km
Hakka Niigata Japan Village - 14 km
Hosoo Niigata Japan Village - 15 km
Kano Niigata Japan Village - 15 km
Hitomurao Niigata Japan Village - 16 km
Shimizudani Niigata Japan Village - 16 km
Urasa Niigata Japan Village - 16 km
Yamato Niigata Japan Village - 16 km
Gohen Niigata Japan Village - 16 km
Katakai Niigata Japan Village - 16 km
Fudosawa Niigata Japan Village - 16 km
Muaida Niigata Japan Village - 16 km
Futatsuya Niigata Japan Village - 17 km
Takezawa Niigata Japan Village - 17 km
Ishiguro Niigata Japan Village - 17 km
Koyamaru Niigata Japan Village - 17 km
Tanokura Niigata Japan Village - 17 km
O-Hirata Niigata Japan Village - 17 km
Ichinosawa Niigata Japan Village - 17 km
Horinouchi Niigata Japan Village - 17 km
Kurohime Niigata Japan Village - 17 km
Orii Niigata Japan Village - 17 km
Noda Niigata Japan Village - 18 km
Iwano Niigata Japan Village - 18 km
Shitoka Niigata Japan Village - 18 km
Itsukamachi Niigata Japan Village - 18 km
Imogawa Niigata Japan Village - 18 km
Terada Niigata Japan Village - 18 km
Miyahara Niigata Japan Village - 18 km
Yasuda Niigata Japan Village - 18 km
Mushino Niigata Japan Village - 18 km
Gamo Niigata Japan Village - 18 km
Yamaguchi Niigata Japan Village - 19 km
Higashigawa Niigata Japan Village - 19 km
Hashizume Niigata Japan Village - 19 km
Takatori Niigata Japan Village - 19 km
Tamugi Niigata Japan Village - 19 km
Tasawa Niigata Japan Village - 19 km
Takanosu Niigata Japan Village - 19 km
Koide Niigata Japan Village - 19 km
Urataguchi Niigata Japan Village - 20 km
Raikoji Niigata Japan Village - 20 km
Uwayama Niigata Japan Village - 20 km
Ikazuchi Niigata Japan Village - 20 km
Murono Niigata Japan Village - 20 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
Nagano 347 0 82 km
Niigata KIJ 7 Civ. Paved Yes 8200 88 km
23 0 98 km

Ports

Name LOCODE Country Distance
Naoetsu JPNAO Japan 46 km
Aikawa JPAIK Japan 81 km
Himekawa Japan 83 km
Niigata JPKIJ Japan 83 km
Niigata-Higashi Japan 96 km
Sawane Japan 96 km
Ryotu Wan JPSDO Japan 98 km

Dams

Reservoir Dam Name River Year Distance
Akaiwa Akaiwa Tannegawa 1990 23 km
Shakunageko Sagurigawa Sagurigawa 1993 29 km
Kuromatagawadaiichi Kuromatagawadaiichi Kuromatagawa 1958 33 km
Kuromatagawadaini Kuromatagawadaini Kuromatagawa 1964 34 km
Aburumagawa Aburumagawa Aburumagawa 1986 39 km
Okutoneko Yagisawa Tonegawa 1967 44 km
Ginzanko Okutadami Tadamigawa 1960 45 km
Himesayuriko Otani Igarashigawa 1993 47 km
Naramatako Naramata Naramatagawa 1990 48 km
Dogenko Sudagai Tonegawa 1955 48 km
Tagokurako Tagokura Tadamigawa 1959 48 km
Kasaboriko Kasabori Kasaborigawa 1964 49 km
Tadamiko Tadami Tadamigawa 1989 50 km
Shozenjiko Shozenji Shozenjigawa 1984 51 km
Otsumata Otsumata Otsumatagawa 1968 52 km
Fujiwarako Fujiwara Tonegawa 1957 53 km
Tanbarako Tanbara Hocchigawa 1981 56 km
Nozoriko Nozori Nakatsugawa 1956 56 km
Akayako Aimata Akayagawa 1959 57 km
Marunumako Marunuma Otakigawa 1931 68 km
Otomiko Sasagamine Sekigawa 1979 72 km
Sonoharako Sonohara Katashinagawa 1965 75 km
Kawamatako Kawamata Kinugawa 1966 78 km
Tashiroko Kazawa Agatsumagawa 1927 85 km
Chuzenjiko Chuzenji Daiyagawa 1998 85 km
Makabechoseichi Makabe Tonegawa 1928 86 km
Kurobe Kurobe Kinugawa 1912 86 km
Sugadairako Sugadaira Kangawa 1968 87 km
Okususobana Okususobana Susobanagawa 1979 88 km
Kuriyamachoseichi Kuriyama Nebesawagawa 1988 90 km
Yashioko Kawaji Kunugawa 1983 91 km
Uchinokurako Uchinokura Uchinokuragawa 1972 92 km
Ikariko Ikari Ojikagawa 1956 92 km
Imaichichoseichi Imaichi Togawa 1988 92 km
Kusakiko Kusaki Watarasegawa 1976 93 km
Kajigawa Kajigawachisui Kajigawa 1974 93 km
Narusawako Narusawa Harunashirakawa 1950 94 km

Nuclear plants

Name Country Reactors Distance
KASHIWAZAKI KARIWA JAPAN 7 26 km

More information

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