Overall Green Earthquake alert in Bonin Islands, Japan Region on 30 May 2015 11:23 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 7.8 in Bonin Islands, Japan Region on 30 May 2015 11:23 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:	7.8M
Depth:	677.56 Km
Lat/Lon:	27.8312 , 140.4932
Event Date:	30 May 2015 11:23 UTC 30 May 2015 20:23 Local
Exposed Population:	About 2000 people in MMI No people within 100km
Source:	NEIC
Inserted at:	30 May 2015 11:43 UTC

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		Tsunami		GDACS score
NEIC	0		0		0
	Scaled population (vector)	n.a	Max wave scenario	0m
	C1 earthquake	n.a	Max wave realtime	0m
	C2 earthquake	n.a
	Country Vulnerability	n.a
	INFORM_normalised	n.a

Maximum expected impact using different data sources.

Episode Timeline

ID	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1082609	0	30 May 2015 11:23	7.7M, 704km	N/A	No people affected (in 100km)	0m (at 00:00)	00:06	GEOFON
1082611	0.1	30 May 2015 11:23	8.5M, 696km	N/A	No people affected (in 100km)	0.2m (at 04:22)	00:14	PTWC
1082616	0.1	30 May 2015 11:23	8.5M, 696km	N/A	No people affected (in 100km)	0.1m (at 04:06)	00:16	NTWC
1082617	0	30 May 2015 11:23	7.8M, 677.56km	N/A	N/A (in MMI>=VII)	0m (at 00:00)	00:20	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	no people
75 km	no people
50 km	no people
20 km	no people
10 km	no people
5 km	no people
2 km	no people

Affected Provinces

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

More information

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

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