M 4.5 in Japan on 30 Apr 2017 10:30 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: 57.94 Km
Lat/Lon: 35.6083 , 140.2551
Event Date: 30 Apr 2017 10:30 UTC
30 Apr 2017 19:30 Local
Exposed Population:
34290000 people within 100km
Source: NEIC us10008m6r
Inserted at: 30 Apr 2017 10:51 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 0
us10008m6r Scaled population (vector) 0  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1165962 0 30 Apr 2017 10:30 4.5M, 57.94km N/A 34.3 million (in 100km) 00:20 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 Sakura, Chiba, Oami, Togane, Naruto, Goi, Chiba-nyutaun, Narita, Katakai, Yokoshiba, and Saitama.

Radius Population
100 km 37.7 million people
75 km 30 million people
50 km 12.2 million people
20 km 2 million people
10 km 380000 people
5 km 25000 people
2 km 1800 people

Affected Provinces

Region Province Country Population
Kanto Japan 38.5 million people

Affected populated places

Name Region Province Country City class Population Distance
Sakura Chiba Japan City 180000 people 11 km
Chiba Chiba Japan Major city 920000 people 12 km
Oami Chiba Japan Village - 12 km
Togane Chiba Japan Village 55000 people 14 km
Naruto Chiba Japan City 22000 people 14 km
Goi Chiba Japan Village - 17 km
Chiba-nyutaun Chiba Japan Village - 18 km
Narita Chiba Japan City 100000 people 18 km
Katakai Chiba Japan City - 20 km
Yokoshiba Chiba Japan Village - 21 km
Hasunuma Chiba Japan Village - 21 km
Mobara Chiba Japan City 96000 people 22 km
Tako Chiba Japan City - 24 km
Ryugasaki Chiba Japan Village 85000 people 25 km
Chonan Chiba Japan Village - 25 km
Anegasaki Chiba Japan Village - 26 km
Funabashi Chiba Japan City 560000 people 26 km
Ushiku Chiba Japan Village - 26 km
Ino Chiba Japan Village - 26 km
Omori Chiba Japan Village - 26 km
Kamagaya Chiba Japan City 110000 people 27 km
Namegawa Chiba Japan Village - 28 km
Fukawa Ibaraki Japan Village - 29 km
Ichinomiya Chiba Japan Village - 29 km
Ichikawa Chiba Japan City 460000 people 32 km
Ryugaski Ibaraki Japan Village - 33 km
Kansaki Chiba Japan Village - 34 km
Abiko Chiba Japan City 130000 people 35 km
Matsudo Chiba Japan City 460000 people 35 km
Edosaki Ibaraki Japan Village 21000 people 38 km
Fujishiro Ibaraki Japan Village 33000 people 38 km
Kisarazu Chiba Japan City 120000 people 38 km
Asahi Yokaichiba Chiba Japan Village - 38 km
Koda Ibaraki Japan Village - 39 km
Tokyo Tokyo Japan Capital 8.1 million people 39 km
Kururi Chiba Japan Village - 39 km
Ushiku Ibaraki Japan Village 79000 people 40 km
Omigawa Chiba Japan City 25000 people 42 km
Jikkoku Ibaraki Japan Village - 43 km
Wakaguri Ibaraki Japan Village - 44 km
Ohara Chiba Japan City 20000 people 44 km
Idako Ibaraki Japan Village - 44 km
Oyama Ibaraki Japan Village - 45 km
Kihara Ibaraki Japan Village - 45 km
Obari Ibaraki Japan Village - 45 km
Fujioayashi Chiba Japan Village - 45 km
Yaida Ibaraki Japan Village - 45 km
Ikku Ibaraki Japan Village - 46 km
Itako Ibaraki Japan Village 25000 people 46 km
Hinosawa Ibaraki Japan Village - 46 km
Arakawa-Oki Ibaraki Japan Village - 47 km
Kimitsu Chiba Japan Village 92000 people 47 km
Ushibori Ibaraki Japan Village - 47 km
Yoshikawa Saitama Japan Village 60000 people 48 km
Aso Ibaraki Japan Village - 48 km
Yatabe Ibaraki Japan Village - 48 km
Kami-Naganuma Ibaraki Japan Village - 48 km
Golanda Tokyo Japan Village - 48 km
Okunoya Ibaraki Japan Village - 49 km
Sakihama Ibaraki Japan Village - 50 km
Noda Chiba Japan City 120000 people 50 km
Oshita Ibaraki Japan Village - 51 km
Aruga Ibaraki Japan Village - 51 km
Kawasaki Kanagawa Japan Major city 1.3 million people 51 km
Nekoya Ibaraki Japan Village - 51 km
Obunatsu Ibaraki Japan Village - 51 km
Kubo Ibaraki Japan Village - 52 km
Inoue Ibaraki Japan Village - 52 km
Kyuchu Ibaraki Japan Village - 52 km
Kashima Ibaraki Japan Village 65000 people 52 km
Kami-Hirooka Ibaraki Japan Village - 52 km
Yatabe Ibaraki Japan Village - 52 km
Futtso Chiba Japan Village - 52 km
Katsuura Chiba Japan Village 22000 people 52 km
Aonuma Ibaraki Japan Village - 52 km
Owada Ibaraki Japan Village - 52 km
Negoya Ibaraki Japan Village - 53 km
Choshi Chiba Japan City 84000 people 53 km
Kami-aoki Saitama Japan Village - 54 km
Shimana Ibaraki Japan Village - 54 km
Kashiwazaki Ibaraki Japan Village - 54 km
Obata Ibaraki Japan Village - 55 km
Minato Chiba Japan Village - 55 km
Sakura Ibaraki Japan Village - 55 km
Asagaya Tokyo Japan Village - 55 km
Oyama Ibaraki Japan Village - 55 km
Tokawacho Chiba Japan Village - 55 km
Inuwaka Chiba Japan Village - 56 km
Yamada Ibaraki Japan Village - 56 km
Yoshikawa Ibaraki Japan Village - 56 km
Narage Ibaraki Japan Village - 56 km
Nakanuki Ibaraki Japan Village - 56 km
Shishikura Ibaraki Japan Village - 56 km
Goka Ibaraki Japan Village - 56 km
Omi Ibaraki Japan Village - 56 km
Iioka Ibaraki Japan Village - 57 km
Koya Ibaraki Japan Village - 57 km
Fujisawa Ibaraki Japan Village - 57 km
Kamogawa Chiba Japan Village 29000 people 58 km
Kofunatsu Ibaraki Japan Village - 58 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
Shimoshizu 30 0 10 km
Tokyo Narita International NRT 42 Civ. Paved Yes 13100 20 km
Ryugasaki South 2 0 28 km
Shimofusa 30 Civ. Paved Yes 7300 30 km
Ryugasaki 2 0 33 km
Kisarazu 3 Mil. Paved Yes 6000 39 km
Tokyo Haneda International HND 7 Civ. Paved Yes 9800 43 km
26 0 47 km
Yokohama YOK unknown 0 59 km
Chiba-ken 19 0 59 km
Hyakuri 32 Mil. Paved Yes 8800 64 km
Chofu 41 Civ. Paved No 3200 66 km
Atsugi NJA 62 Mil. Paved Yes 7900 75 km
Honda 12 0 77 km
Tachikawa 95 0 78 km
Katsner AAF 109 Civ. Paved No 1900 79 km
Tateyama 3 0 80 km
Iruma 91 Mil. Paved Yes 6500 80 km
Yokota AFB OKO 139 Mil. Paved Yes 11000 83 km
Onishi 20 0 97 km

Ports

Name LOCODE Country Distance
Chiba JPCHB Japan 13 km
Anegasaki JPANE Japan 14 km
Goi JPGOI Japan 17 km
Katunan Ko Japan 25 km
Kisarazu JPKZU Japan 39 km
Ogasawara JPOGA Japan 42 km
Kawasaki JPKWS Japan 46 km
Tokyo JPTYO Japan 46 km
Kashima JPKSM Japan 51 km
Katsuura Ko Japan 54 km
Choshi JPCHO Japan 54 km
Yokohama JPYOK Japan 59 km
Neghisi JPNGI Japan 61 km
Yokosuka JPYOS Japan 65 km
Kurihama JPKRH Japan 68 km
Tateyama JPTTY Japan 79 km

Dams

Reservoir Dam Name River Year Distance
Yamakura Yamakura Yamakuragawa 1964 18 km
Takatakiko Takataki Yorogawa 1990 30 km
Kasumigaura Kasumigaura-Kaihatsu Tonegawa 1995 45 km
Kameyamako Kameyama Obitsugawa 1980 46 km
Kori Kori Korigawa 1972 47 km
Sakuma Sakuma Okuzuregawa 1990 64 km
Miyukiko Gongendochosetsuchi Nakagawa 1991 74 km
Tamako Murayamashimo Tamagawa 2008 75 km
Tamako Murayamakami Tamagawa 1924 77 km
Sayamako Yamaguchi Tamagawa 2002 78 km
Yanakako Wataraseyusuichi Watarasegawa 1989 83 km
Tsukuiko Shiroyama Sagamigawa 1964 88 km
Miyazawako Miyazawatameike Koazegawa 1941 88 km
Jajanboike Kozogawa Kozogawa 1985 90 km
Miyagaseko Miyagase Nakatsugawa 2001 92 km
Sagamiko Sagami Sagamigawa 1947 96 km

More information

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