Overall Green Earthquake alert in Japan on 26 Feb 2021 11:31 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 4.8 in Japan on 26 Feb 2021 11:31 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:	4.8M
Depth:	63.69 Km
Lat/Lon:	41.0479 , 142.0725
Event Date:	26 Feb 2021 11:31 UTC 26 Feb 2021 20:31 Local
Exposed Population:	600000 people within 100km
Source:	NEIC us7000ddv8
Inserted at:	26 Feb 2021 12:07 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
us7000ddv8	Scaled population (vector)	5.09
	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

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1360713		0	26 Feb 2021 11:31	4.8M, 63.69km	N/A	610 thousand (in 100km)		00:36	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 Tomari, Dedo, Oibegawa, Kodanosawa, Shinaya, Rokkasho, Takahoko, Ichiyanagi, Amagamori, Sunagamori, and Hitokawame.

Radius	Population
100 km	610000 people
75 km	150000 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
Hokkaido	Japan	5.8 million people
Sakhalinskaya oblast'	Russian Federation	730000 people
Kanto	Japan	38.5 million people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Tomari	Aomori	Japan	Village	-	58 km
Dedo	Aomori	Japan	Village	-	58 km
Oibegawa	Aomori	Japan	Village	-	59 km
Kodanosawa	Aomori	Japan	Village	-	60 km
Shinaya	Aomori	Japan	Village	-	60 km
Rokkasho	Aomori	Japan	Village	-	60 km
Takahoko	Aomori	Japan	Village	-	61 km
Ichiyanagi	Aomori	Japan	Village	-	61 km
Amagamori	Aomori	Japan	Village	-	62 km
Sunagamori	Aomori	Japan	Village	-	62 km
Hiranuma	Aomori	Japan	Village	-	62 km
Kurauchi	Aomori	Japan	Village	-	62 km
Sarugamori	Aomori	Japan	Village	-	63 km
Shiogama	Aomori	Japan	Village	-	63 km
Origasa	Aomori	Japan	Village	-	63 km
Mukawame	Aomori	Japan	Village	-	64 km
Futamata	Aomori	Japan	Village	-	65 km
Shiriya	Aomori	Japan	Village	-	65 km
Sabishiro	Aomori	Japan	Village	-	66 km
Uchinuma	Aomori	Japan	Village	-	66 km
Yachigashira	Aomori	Japan	Village	-	66 km
Tokusari	Aomori	Japan	Village	-	66 km
Tanichito	Aomori	Japan	Village	-	66 km
Shikkari	Aomori	Japan	Village	-	67 km
Muronokubo	Aomori	Japan	Village	-	67 km
Hata	Aomori	Japan	Village	-	67 km
Yokawame	Aomori	Japan	Village	-	67 km
Nei	Aomori	Japan	Village	-	67 km
Omisawa	Aomori	Japan	Village	-	68 km
Chushi	Aomori	Japan	Village	-	68 km
Mikawame	Aomori	Japan	Village	-	68 km
Chikagawa	Aomori	Japan	Village	-	68 km
Yokohama	Aomori	Japan	Village	-	69 km
Futakawame	Aomori	Japan	Village	-	69 km
Hitokawame	Aomori	Japan	Village	-	70 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
Misawa Naf	MSJ	36	Mil.	Paved	Yes	10000	70 km
Hachinohe	HHE	46	Mil.	Paved	Yes	7300	75 km

Ports

Name	LOCODE	Country	Distance
Hachinohe	JPHHE	Japan	72 km
Ominato	JPOMT	Japan	79 km
Ohata		Japan	98 km

Dams

Reservoir	Dam Name	River	Year	Distance
Tenma	Tenma	Tsubokawa	1968	90 km
Tanosawatameike	Tanosawatameike	Shimizugawa	1942	93 km
Yukiyagawa	Yukiyagawa	Yukiyagawa	1976	96 km

Nuclear plants

Name	Country	Reactors	Distance
HIGASHI DORI	JAPAN	1	68 km

More information

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

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