Overall Green Earthquake alert in Near East Coast Of Honshu, Japan on 13 Aug 2022 21:57 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 4.7 in Near East Coast Of Honshu, Japan on 13 Aug 2022 21:57 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:	4.7M
Depth:	36.534 Km
Lat/Lon:	35.4336 , 141.1352
Event Date:	13 Aug 2022 21:57 UTC 14 Aug 2022 06:57 Local
Exposed Population:	3.1 million in 100km
Source:	NEIC us6000iam0
Inserted at:	13 Aug 2022 22:20 UTC
INFORM Coping capacity of the alert score	1.1 ()

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	0		0
us6000iam0	Scaled population (vector)	0
	C1 earthquake	1
	C2 earthquake	0
	Country Vulnerability	0
	INFORM_normalised	1

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1456752		0	13 Aug 2022 21:57	4.7M, 36.534km	N/A	3.1 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 off shore.

Radius	Population
100 km	3.1 million people
75 km	730000 people
50 km	80000 people
20 km	no people
10 km	no people
5 km	no people
2 km	no people

Affected Provinces

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Inuwaka	Chiba	Japan	Village	-	39 km
Tokawacho	Chiba	Japan	Village	-	39 km
Choshi	Chiba	Japan	City	84000 people	44 km
Yatabe	Ibaraki	Japan	Village	-	52 km
Asahi Yokaichiba	Chiba	Japan	Village	-	54 km
Hasunuma	Chiba	Japan	Village	-	61 km
Katakai	Chiba	Japan	City	-	63 km
Yokoshiba	Chiba	Japan	Village	-	64 km
Okunoya	Ibaraki	Japan	Village	-	64 km
Omigawa	Chiba	Japan	City	25000 people	67 km
Naruto	Chiba	Japan	City	22000 people	69 km
Tako	Chiba	Japan	City	-	69 km
Togane	Chiba	Japan	Village	55000 people	69 km
Chiba	Chiba	Japan	Major city	920000 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
Tokyo Narita International	NRT	42	Civ.	Paved	Yes	13100	77 km
Shimoshizu		30				0	92 km
Ryugasaki South		2				0	95 km
Ryugasaki		2				0	97 km

Ports

Name	LOCODE	Country	Distance
Choshi	JPCHO	Japan	44 km
Kashima	JPKSM	Japan	65 km
Katsuura Ko		Japan	83 km
Goi	JPGOI	Japan	94 km
Chiba	JPCHB	Japan	95 km
Anegasaki	JPANE	Japan	96 km

Dams

Reservoir	Dam Name	River	Year	Distance
Kasumigaura	Kasumigaura-Kaihatsu	Tonegawa	1995	81 km
Takatakiko	Takataki	Yorogawa	1990	90 km
Yamakura	Yamakura	Yamakuragawa	1964	91 km
Kameyamako	Kameyama	Obitsugawa	1980	98 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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