Overall Green Earthquake alert in Indonesia on 21 May 2015 13:48 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 4.5 in Indonesia on 21 May 2015 13:48 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:	4.5M
Depth:	30.5 Km
Lat/Lon:	1.8715 , 96.9833
Event Date:	21 May 2015 13:48 UTC 21 May 2015 20:48 Local
Exposed Population:	258822 people within 100km
Source:	NEIC
Inserted at:	21 May 2015 15:19 UTC

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	0		0
	Scaled population (vector)	n.a
	C1 earthquake	n.a
	C2 earthquake	n.a
	Country Vulnerability	n.a
	INFORM_normalised	n.a

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1081398		0	21 May 2015 13:48	4.5M, 30.5km	N/A	260 thousand (in 100km)		01:31	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 Indonesia , Special Region of Aceh (population 4,307,539) .

Radius	Population
100 km	230000 people
75 km	110000 people
50 km	32000 people
20 km	no people
10 km	no people
5 km	no people
2 km	no people

Affected Provinces

Region Province	Country	Population
Aceh	Indonesia	4.3 million people

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
Gunungsitoli	GNS	unknown					96 km

Ports

Name	LOCODE	Country	Distance
Sinabang	IDSNG	Indonesia	92 km
Gunungsitoli		Indonesia	94 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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