Overall Green Earthquake alert in Japan on 31 Dec 2020 16:53 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 4.9 in Japan on 31 Dec 2020 16:53 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:	4.9M
Depth:	26.44 Km
Lat/Lon:	34.4047 , 139.2565
Event Date:	31 Dec 2020 16:53 UTC 01 Jan 2021 01:53 Local
Exposed Population:	1760000 people within 100km
Source:	NEIC us6000d4kf
Inserted at:	31 Dec 2020 18:21 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
us6000d4kf	Scaled population (vector)	5.59
	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
1350738		0	31 Dec 2020 16:53	4.9M, 26.44km	N/A	1.8 million (in 100km)		01:27	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 Chubu (population 5,172,046) . The nearest places are Wakago, Motomura, Shikineshima, Toshima, Kozushima, Sashikiji, Kudatchi, Mabushi, Habuminato, Suzaki, and Yogisawa.

Radius	Population
100 km	1.8 million people
75 km	220000 people
50 km	69000 people
20 km	3200 people
10 km	2800 people
5 km	2400 people
2 km	<1000 people

Affected Provinces

Region Province	Country	Population
Chubu	Japan	5.2 million people
Kanto	Japan	38.5 million people
Kinki	Japan	22.2 million people
Tohoku	Japan	10 million people
Shikoku	Japan	4.3 million people
Chugoku	Japan	8 million people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Wakago	Shizuoka	Japan	Village	-	3 km
Motomura	Shizuoka	Japan	Village	-	4 km
Shikineshima	Shizuoka	Japan	Village	-	9 km
Toshima	Shizuoka	Japan	Village	-	13 km
Kozushima	Shizuoka	Japan	Village	-	24 km
Sashikiji	Shizuoka	Japan	Village	-	34 km
Kudatchi	Shizuoka	Japan	Village	-	34 km
Mabushi	Shizuoka	Japan	Village	-	34 km
Habuminato	Shizuoka	Japan	Village	-	36 km
Suzaki	Shizuoka	Japan	Village	-	39 km
Motomachi	Shizuoka	Japan	Village	-	39 km
Motomura	Shizuoka	Japan	Village	-	40 km
Okubo	Shizuoka	Japan	Village	-	40 km
Kamitsuki	Shizuoka	Japan	Village	-	40 km
Toji	Shizuoka	Japan	Village	-	41 km
Shimoda	Shizuoka	Japan	Village	26000 people	42 km
Ako	Shizuoka	Japan	Village	-	42 km
Kaisami	Shizuoka	Japan	Village	-	42 km
Jinooka	Shizuoka	Japan	Village	-	42 km
Gebano	Shizuoka	Japan	Village	-	42 km
Shitaru	Shizuoka	Japan	Village	-	43 km
Kochi	Shizuoka	Japan	Village	-	43 km
Ose	Shizuoka	Japan	Village	-	44 km
Okada	Shizuoka	Japan	Village	-	44 km
Shimo Kamo	Shizuoka	Japan	Village	-	44 km
Teishi	Shizuoka	Japan	Village	-	44 km
Nawaji	Shizuoka	Japan	Village	-	44 km
Higashiyama	Shizuoka	Japan	Village	-	44 km
Senzu	Shizuoka	Japan	Village	-	44 km
Katsura	Shizuoka	Japan	Village	-	44 km
Ochiai	Shizuoka	Japan	Village	-	45 km
Yatsu	Shizuoka	Japan	Village	-	45 km
Horigiri	Shizuoka	Japan	Village	-	45 km
Inatori	Shizuoka	Japan	Village	-	45 km
Mlike	Shizuoka	Japan	Village	-	45 km
Irozaki	Shizuoka	Japan	Village	-	45 km
Rendaiji	Shizuoka	Japan	Village	-	46 km
Kawazu	Shizuoka	Japan	Village	-	46 km
Nakagi	Shizuoka	Japan	Village	-	46 km
Kami Kamo	Shizuoka	Japan	Village	-	46 km
Tanaka	Shizuoka	Japan	Village	-	46 km
Magome	Shizuoka	Japan	Village	-	46 km
Tsubota	Shizuoka	Japan	Village	-	46 km
Kano	Shizuoka	Japan	Village	-	47 km
Lriya	Shizuoka	Japan	Village	-	47 km
Nijo	Shizuoka	Japan	Village	-	47 km
Mitsukuri	Shizuoka	Japan	Village	-	47 km
Sawada	Shizuoka	Japan	Village	-	47 km
Iwadono	Shizuoka	Japan	Village	-	47 km
Chiharano	Shizuoka	Japan	Village	-	47 km
Kitayugano	Shizuoka	Japan	Village	-	48 km
Shirade	Shizuoka	Japan	Village	-	48 km
Iruma	Shizuoka	Japan	Village	-	48 km
Sashida	Shizuoka	Japan	Village	-	48 km
Sugo	Shizuoka	Japan	Village	-	48 km
Kawazuikadaba	Shizuoka	Japan	Village	-	48 km
Yagiyama	Shizuoka	Japan	Village	-	49 km
Kami-Ono	Shizuoka	Japan	Village	-	49 km
Yugaoka	Shizuoka	Japan	Village	-	49 km
Kami-Sagano	Shizuoka	Japan	Village	-	49 km
Tateiwa	Shizuoka	Japan	Village	-	49 km
Naramoto	Shizuoka	Japan	Village	-	49 km
Gansho En	Shizuoka	Japan	Village	-	50 km
Hokkawa	Shizuoka	Japan	Village	-	50 km
Konabe	Shizuoka	Japan	Village	-	50 km
Ichinose	Shizuoka	Japan	Village	-	50 km
Yoshida	Shizuoka	Japan	Village	-	51 km
Mera	Shizuoka	Japan	Village	-	51 km
Kora	Shizuoka	Japan	Village	-	51 km
Onabe	Shizuoka	Japan	Village	-	51 km
Okubara	Shizuoka	Japan	Village	-	51 km
Okawa	Shizuoka	Japan	Village	-	52 km
Kora Shimo-Ono	Shizuoka	Japan	Village	-	52 km
Kosugikara	Shizuoka	Japan	Village	-	53 km
Ikeshiro	Shizuoka	Japan	Village	-	53 km
Yahatano	Shizuoka	Japan	Village	-	54 km
Numanokawa	Shizuoka	Japan	Village	-	54 km
Ihama	Shizuoka	Japan	Village	-	55 km
O Toge	Shizuoka	Japan	Village	-	55 km
Harai	Shizuoka	Japan	Village	-	56 km
Ike	Shizuoka	Japan	Village	-	56 km
Futo	Shizuoka	Japan	Village	-	57 km
Funata	Shizuoka	Japan	Village	-	57 km
Sakibara	Shizuoka	Japan	Village	-	57 km
Hozo In	Shizuoka	Japan	Village	-	58 km
Matsuo	Shizuoka	Japan	Village	-	58 km
Ishibu	Shizuoka	Japan	Village	-	58 km
Michibu	Shizuoka	Japan	Village	-	58 km
Totari	Shizuoka	Japan	Village	-	58 km
Matsuzaki	Shizuoka	Japan	City	-	59 km
Shirakawa	Shizuoka	Japan	Village	-	59 km
Ojiro	Shizuoka	Japan	Village	-	60 km
Kayano	Shizuoka	Japan	Village	-	60 km
Neginohara	Shizuoka	Japan	Village	-	60 km
Miyagahara	Shizuoka	Japan	Village	-	60 km
Otaki	Shizuoka	Japan	Village	-	60 km
Kawana	Shizuoka	Japan	Village	-	61 km
Okuno	Shizuoka	Japan	Village	-	61 km
Joboshi	Shizuoka	Japan	Village	-	61 km
Nobata	Shizuoka	Japan	Village	-	61 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
		29				0	4 km
Oshima	OIM	40	Civ.	Paved	Yes	3900	43 km
Miyake Jima	MYE	20	Civ.	Paved	Yes	3900	46 km
Tateyama		3				0	83 km
Shizuhama		7	Civ.	Paved	Yes	4900	99 km

Ports

Name	LOCODE	Country	Distance
Nii		Japan	3 km
Kozu Island		Japan	25 km
Oshima	JPOSM	Japan	39 km
Shimoda	JPSMD	Japan	40 km
Miyake		Japan	45 km
Mikura		Japan	69 km
Numazu	JPNUM	Japan	83 km
Tateyama	JPTTY	Japan	85 km
Shimizu	JPSMZ	Japan	96 km
Tagonour	JPTGO	Japan	96 km
Kurihama	JPKRH	Japan	98 km
Omaezaki	JPOMZ	Japan	98 km

Dams

Reservoir	Dam Name	River	Year	Distance
Matsukawako	Okuno	Itookawa	1989	62 km
Iizumishusuizeki	Iizumishusuizeki	Sakawagawa	1973	97 km
Sakuma	Sakuma	Okuzuregawa	1990	99 km

More information

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

Disclaimer
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