M 4.6 in Japan on 26 Feb 2021 04:04 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: 57.95 Km
Lat/Lon: 37.6007 , 141.6216
Event Date: 26 Feb 2021 04:04 UTC
26 Feb 2021 13:04 Local
Exposed Population:
1690000 people within 100km
Source: NEIC us7000ddsn
Inserted at: 26 Feb 2021 04:27 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
us7000ddsn Scaled population (vector) 5.34  
  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
1360651 0 26 Feb 2021 04:04 4.6M, 57.95km N/A 1.7 million (in 100km) 00:22 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 Kayahama, Onaba, Kiyohashi, Minami-Ibi, Odaka, Takahira, Futaba, Namie, Oragahama, Onoda, and Sendai.

Radius Population
100 km 1.7 million people
75 km 120000 people
50 km no people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Tohoku Japan 10 million people
Kanto Japan 38.5 million people
Chubu Japan 5.2 million people
Hokkaido Japan 5.8 million people

Affected populated places

Name Region Province Country City class Population Distance
Kayahama Fukushima Japan Village - 54 km
Onaba Fukushima Japan Village - 54 km
Kiyohashi Fukushima Japan Village - 54 km
Minami-Ibi Fukushima Japan Village - 55 km
Odaka Fukushima Japan Village - 56 km
Takahira Fukushima Japan Village - 56 km
Futaba Fukushima Japan Village - 56 km
Namie Fukushima Japan Village 22000 people 56 km
Oragahama Fukushima Japan Village - 58 km
Onoda Fukushima Japan Village - 58 km
Isobe Fukushima Japan Village - 59 km
Kashima Fukushima Japan Village - 59 km
Kariyado Fukushima Japan Village - 59 km
Nakanouchi Fukushima Japan Village - 60 km
Kita-Nagano Fukushima Japan Village - 61 km
Haramachi Fukushima Japan Village 47000 people 61 km
Umekawa Fukushima Japan Village - 61 km
Tomioka Fukushima Japan Village - 62 km
Bogoya Fukushima Japan Village - 62 km
Koyamada Fukushima Japan Village - 62 km
Okuma Fukushima Japan Village - 62 km
Tachiya Fukushima Japan Village - 62 km
Takatsudo Fukushima Japan Village - 63 km
Ogawara Fukushima Japan Village - 63 km
Haragama Fukushima Japan Village - 63 km
Oyama Fukushima Japan Village - 63 km
Kami-Shigeoka Fukushima Japan Village - 64 km
Sekimori Fukushima Japan Village - 65 km
Nakumura Fukushima Japan Village - 65 km
Tetsuzan Fukushima Japan Village - 65 km
Ide Fukushima Japan Village - 65 km
Naraha Fukushima Japan Village - 66 km
Shajigami Fukushima Japan Village - 66 km
Hirusone Fukushima Japan Village - 67 km
Komagamine Fukushima Japan Village - 67 km
Kuroki Fukushima Japan Village - 68 km
Tsurishi Fukushima Japan Village - 68 km
Suketsune Fukushima Japan Village - 68 km
Kodeya Fukushima Japan Village - 68 km
Otsubo Fukushima Japan Village - 69 km
Shimo-Kitabo Fukushima Japan Village - 69 km
Iso Miyagi Japan Village - 70 km
Gomaisawa Fukushima Japan Village - 70 km
Sendai Miyagi Japan Major city 1 million people 97 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
Sendai SDJ 5 Civ. Paved Yes 9800 86 km
Kasuminome 5 0 93 km
Matsushima 2 Civ. Paved Yes 8800 96 km

Ports

Name LOCODE Country Distance
Soma JPSMA Japan 64 km
Ishinomaki JPISM Japan 94 km
Onagawa JPONG Japan 94 km
Shiogama JPSGM Japan 95 km
Onahama JPONA Japan 97 km

Dams

Reservoir Dam Name River Year Distance
Yokokawa Yokokawa Otagawa 1983 63 km
Sakashita Sakashita Okawaragawa 1973 65 km
Takanokura Takanokura Mizunashigawa 1975 65 km
Ogaki Ogaki Ukedogawa 1985 66 km
Tamanotameike Tamano Udagawa 1945 80 km
Tarumizuko Tarumizu Masudagawa 1976 94 km

Nuclear plants

Name Country Reactors Distance
FUKUSHIMA-DAIICHI JAPAN 6 56 km
FUKUSHIMA-DAINI JAPAN 4 61 km
ONAGAWA JAPAN 3 89 km

More information

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