M 6.8 in Japan on 05 Sep 2018 18:07 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: 6.8M
Depth: 10 Km
Lat/Lon: 42.86 , 141.66
Event Date: 05 Sep 2018 18:07 UTC
06 Sep 2018 03:07 Local
Exposed Population: 3360000 people within 100km
Source: GEOFON gfz2018rkrd
Inserted at: 05 Sep 2018 18:20 UTC
INFORM Coping capacity of the alert score
1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
GEOFON 0.8 0 0.8
gfz2018rkrd Scaled population (vector) 6.88 Max wave alert 0m  
  C1 earthquake 0.73 Max wave realtime 0m  
  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
1227149 0.8 05 Sep 2018 18:07 6.8M, 10km N/A 3.4 million (in 100km) 0m (at 00:00) 00:12 GEOFON
1227151 0.4 05 Sep 2018 18:07 6.7M, 39km N/A 3.4 million (in 100km) 0m (at 00:00) 00:18 PTWC
1227153 0.4 05 Sep 2018 18:07 6.7M, 39km N/A 3.4 million (in 100km) 0m (at 00:00) 00:21 NTWC    
1227156 0 05 Sep 2018 18:07 6.6M, 31km 6.86 20 thousand (in MMI>=VII) 0m (at 00:00) 00:26 NEIC
1227170 0.6 05 Sep 2018 18:07 6.6M, 33.36km 8.64 1.4 million (in MMI>=VII) 0m (at 00:00) 01:38 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 Hokkaido (population 5,808,054) . The nearest places are Chitose, Kenufuchi, Eniwa, Shimamatsu, Oiwake, Hayakita, Yuni, Hachigo-shigaichi, Kohan, Azuma, and Atsugacho.

Radius Population
100 km 3.4 million people
75 km 3 million people
50 km 2.7 million people
20 km 240000 people
10 km 150000 people
5 km 76000 people
2 km 7700 people

Affected Provinces

Region Province Country Population
Hokkaido Japan 5.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Chitose Hokkaido Japan City 92000 people 4 km
Kenufuchi Hokkaido Japan Village - 7 km
Eniwa Hokkaido Japan Village 68000 people 7 km
Shimamatsu Hokkaido Japan Village - 9 km
Oiwake Hokkaido Japan Village - 12 km
Hayakita Hokkaido Japan Village - 17 km
Yuni Hokkaido Japan Village - 19 km
Hachigo-shigaichi Hokkaido Japan Village - 23 km
Kohan Hokkaido Japan Village - 23 km
Azuma Hokkaido Japan Village - 23 km
Kuriyama Hokkaido Japan City - 24 km
Kikaiba Hokkaido Japan Village - 24 km
Atsubetsu Hokkaido Japan Village - 25 km
Tomakomai Hokkaido Japan City 170000 people 26 km
Takinoue Hokkaido Japan Village - 26 km
Tsukisamu Hokkaido Japan Village - 28 km
Horonai Hokkaido Japan Village - 29 km
Hama-atsuma Hokkaido Japan Village - 29 km
Oji Hokkaido Japan Village - 29 km
Ebetsu Hokkaido Japan City 130000 people 29 km
Kurisawa Hokkaido Japan Village - 29 km
Kami-yamahana Hokkaido Japan Village - 29 km
Mayachi Hokkaido Japan Village - 32 km
Kiyomizudani Hokkaido Japan Village - 32 km
Sapporo Hokkaido Japan Major city 1.9 million people 34 km
Shinotsu Hokkaido Japan Village - 34 km
Yubari Hokkaido Japan City 13000 people 35 km
Nishikioka Hokkaido Japan Village - 35 km
Mukawa Hokkaido Japan Village - 38 km
Iwamizawa Hokkaido Japan City 84000 people 39 km
Manji Hokkaido Japan Village - 39 km
Hobetsu Hokkaido Japan Village - 40 km
Kami-tappu Hokkaido Japan Village - 40 km
Tobetsu Hokkaido Japan Village - 41 km
Naka-hobetsu Hokkaido Japan Village - 41 km
Jozankei Hokkaido Japan Village - 41 km
Rubeshibe Hokkaido Japan Village - 42 km
Shiraoi Hokkaido Japan Village 21000 people 43 km
Kotoni Hokkaido Japan Village - 44 km
Bannaguro Hokkaido Japan Village - 44 km
Horonai Hokkaido Japan Village - 45 km
Biratori Hokkaido Japan Village - 45 km
Horonaibuto Hokkaido Japan Village - 45 km
Shin-horonai-tanzan Hokkaido Japan Village - 48 km
Hobiboe Hokkaido Japan Village - 48 km
Sarufuto Hokkaido Japan Village - 48 km
Kawamukai Hokkaido Japan Village - 49 km
Ishikari Hokkaido Japan Village 57000 people 49 km
Mikasa Hokkaido Japan City 12000 people 51 km
Zenibako Hokkaido Japan Village - 51 km
Hongo Hokkaido Japan Village - 52 km
Motoyama Hokkaido Japan Village - 52 km
Futaba Hokkaido Japan Village - 52 km
Bibai Hokkaido Japan City 29000 people 52 km
Tsukigata Hokkaido Japan Village - 53 km
Mombetsu Hokkaido Japan Village - 54 km
Furenai Hokkaido Japan Village - 54 km
Ninyu Hokkaido Japan Village - 56 km
Ikushumbetsu Hokkaido Japan Village - 56 km
Garo Hokkaido Japan Village - 56 km
Takinosawa Hokkaido Japan Village - 59 km
Kombetsu Hokkaido Japan Village - 60 km
Numasawa Hokkaido Japan Village - 60 km
Bankei Hokkaido Japan Village - 60 km
Chashinai Hokkaido Japan Village - 61 km
Noboribetsu Hokkaido Japan Village 52000 people 62 km
Atsuta Hokkaido Japan Village - 62 km
Sannakoro Hokkaido Japan Village - 62 km
Tokiwa Hokkaido Japan Village - 63 km
Higashi-kutchan Hokkaido Japan Village - 63 km
Nibangawa Hokkaido Japan Village - 64 km
Otaru Hokkaido Japan City 140000 people 65 km
Showa Hokkaido Japan Village - 66 km
Naie Hokkaido Japan Village - 66 km
Rusutsu Hokkaido Japan Village - 66 km
Horobetsu Hokkaido Japan Village - 68 km
Atsugacho Hokkaido Japan Village - 69 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
Sappora / Chitose 27 Mil. Paved Yes 9800 7 km
Sapporo-New Chitose CTS 21 Civ. Paved Yes 9800 10 km
Sapporo OKD 8 Civ. Paved Yes 4500 37 km
Sado Shima SDS unknown 0 84 km

Ports

Name LOCODE Country Distance
Tomakomai JPTMK Japan 25 km
Wakkanai Japan 62 km
Otaru JPOTR Japan 65 km
Muroran JPMUR Japan 82 km
Hamamasu Japan 84 km
Yoichi Japan 84 km
Iwanai JPIWN Japan 95 km

Dams

Reservoir Dam Name River Year Distance
Eniwako Izarigawa Izarigawa 1980 18 km
Kawabata Kawabata Yubarigawa 1962 22 km
Azuma Azuma Azumagawa 1969 32 km
Shimizusawa Shimizusawa Yubarigawa 1954 34 km
Shuparoko Oyubari Yubarigawa 1959 41 km
Horomui Horomui Mappugawa 1990 41 km
Jozanko Hoheikyo Toyohiragawa 1972 42 km
Hobetsu Hobetsu Hobetsugawa 1984 42 km
Sapporoko Jozankei Otarunaigawa 1989 43 km
Nibutaniko Nibutani Sarugawa n/a 47 km
Katsurazawako Katsurazawa Ikushunbetsugawa 1957 51 km
Tsukigata Tsukigata Subetsugawa 1973 59 km
Ashibetsuko Ashibetsu Sorachigawa 1952 59 km
Sappinaichosuichi Sappinai Sappinaigawa 1926 60 km
Iwachishi Iwachishi Sarugawa 1958 61 km
Fujinnoumi Horobetsu Horobetsugawa 1967 68 km
Aoyamachosuichi Aoyama Tobetsugawa 1963 69 km
Kanayamako Kanayama Sorachigawa 1967 70 km
Niikappu Niikappu Niikappugawa 1974 79 km
Shimonikappu Shimonikappu Nikappugawa 1969 79 km
Nokanan Nokanan Nokanangawa 1978 80 km
Rukuchosuichi Shintotsukawa Rukushubetsugawa 1961 81 km
Kitasatoko Kitasato Sorachigawa 1999 83 km
Nokananko Nokanan Sorachigawa 1971 83 km
Wakkachosuichi Wakka Makinosawagawa 1923 85 km
Poroshiriko Okunikappu Nikappugawa 1963 86 km
Shizunaichoseichi Shizunai Shizunaigawa 1966 89 km
Takamiko Takami Shizunaigawa 1983 92 km
Etaibetsu Etaibetsu Etaibetsugawa 1966 98 km
Nisshin Nisshin Pirikafuranuigawa 1970 99 km
Mitsuishi Mitsuishi Mitsuishigawa 1991 100 km

More information

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