Overall Green Earthquake alert in Japan on 13 May 2021 23:58 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 6 in Japan on 13 May 2021 23:58 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:	6.0M
Depth:	37.74 Km
Lat/Lon:	37.7107 , 141.7191
Event Date:	13 May 2021 23:58 UTC 14 May 2021 08:58 Local
Exposed Population:	1540000 people within 100km
Source:	NEIC us7000e2xd
Inserted at:	14 May 2021 00:25 UTC
INFORM Coping capacity of the alert score	1.5 (Japan)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		GDACS score
NEIC	0		0
us7000e2xd	Scaled population (raster)	0
	C1 shakemap	-0.59
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	0.57

Maximum expected impact using different data sources.

Episode Timeline

ID	Date	Mag, Depth	MMI*	Population**	Delay (hh:mm)	Source
1375002	13 May 2021 23:58	6M, 43.08km	3.94	N/A (in MMI>=VII)	00:16	NEIC
1375005	13 May 2021 23:58	6M, 37.74km	3.97	N/A (in MMI>=VII)	00:27	NEIC
1375020	13 May 2021 23:58	6M, 32km	4.41	N/A (in MMI>=VII)	01:09	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 Minami-Ibi, Kayahama, Futawatashi, Isobe, Takahira, Onaba, Aji, Kiyohashi, Odaka, Ikenohama, and Sendai.

Radius	Population
100 km	1.5 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
Minami-Ibi	Fukushima	Japan	Village	-	62 km
Kayahama	Fukushima	Japan	Village	-	63 km
Futawatashi	Miyagi	Japan	Village	-	64 km
Isobe	Fukushima	Japan	Village	-	64 km
Takahira	Fukushima	Japan	Village	-	65 km
Onaba	Fukushima	Japan	Village	-	65 km
Aji	Miyagi	Japan	Village	-	65 km
Kiyohashi	Fukushima	Japan	Village	-	66 km
Odaka	Fukushima	Japan	Village	-	66 km
Ikenohama	Miyagi	Japan	Village	-	66 km
Kashima	Fukushima	Japan	Village	-	67 km
Umekawa	Fukushima	Japan	Village	-	67 km
Oshika	Miyagi	Japan	Village	-	67 km
Ayukawahama	Miyagi	Japan	Village	-	68 km
Haragama	Fukushima	Japan	Village	-	68 km
Namie	Fukushima	Japan	Village	22000 people	68 km
Tachiya	Fukushima	Japan	Village	-	68 km
Futaba	Fukushima	Japan	Village	-	68 km
Kukunari	Miyagi	Japan	Village	-	69 km
Koyamada	Fukushima	Japan	Village	-	69 km
Kita-Nagano	Fukushima	Japan	Village	-	69 km
Niiyama	Miyagi	Japan	Village	-	70 km
Sendai	Miyagi	Japan	Major city	1 million people	94 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	85 km
Matsushima		2	Civ.	Paved	Yes	8800	89 km
Kasuminome		5				0	90 km

Ports

Name	LOCODE	Country	Distance
Soma	JPSMA	Japan	68 km
Onagawa	JPONG	Japan	84 km
Ishinomaki	JPISM	Japan	85 km
Shiogama	JPSGM	Japan	91 km

Dams

Reservoir	Dam Name	River	Year	Distance
Yokokawa	Yokokawa	Otagawa	1983	73 km
Takanokura	Takanokura	Mizunashigawa	1975	74 km
Ogaki	Ogaki	Ukedogawa	1985	77 km
Sakashita	Sakashita	Okawaragawa	1973	78 km
Tamanotameike	Tamano	Udagawa	1945	86 km
Tarumizuko	Tarumizu	Masudagawa	1976	93 km

Nuclear plants

Name	Country	Reactors	Distance
FUKUSHIMA-DAIICHI	JAPAN	6	69 km
FUKUSHIMA-DAINI	JAPAN	4	75 km
ONAGAWA	JAPAN	3	79 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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