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 5.6 in Southwest Indian Ridge on 10 Jul 2018 10:26 UTC
GDACS Event Report - Earthquake impact

Earthquake event

Population map close up
Population map close up. (Source: JRC)
  • Magnitude: 5.6 M
  • Depth: 10 km (very shallow)
  • Source: NEIC NEIC us2000g11i
  • Location (latitude/longitude): -31.5946, 58.3495
  • Time (UTC): 10 Jul 2018 10:26:21
  • Time (ECT): 10 Jul 2018 12:26:21
  • INFORM Coping capacity of the alert score: 1.1 ()

Event time line

For accessing reports of previous advisories, please click on the advisory number in the table below.

IDAlertScore DateMag, DepthMax Intensity (MMI*)Pop [100 km or MMI 9-7]Tsunami risk (max height)Delay (hh:mm) Source
1218795 0.01

Calculation Episode detail

Reference Id Level Score Type Date Added Population
100km or MMI9-7    
20km or Max MMI    
Max Height(m)
Episode 1218795
0.01 realtime 2018-07-10 10:48:26 No people affected 0
  Earthquake 235761
0 realtime 2018-07-10 10:48:26 No people affected No people affected 0
  Shakemap 2
0.01 realtime 2018-07-10 12:34:11 No people affected No people affected 0
10 Jul 2018 10:26 5.6M, 10km N/A No people affected 00:21 NEIC NEIC

(*) Modified Mercalli Intensity Scale

Earthquake impact details


Population near epicenter
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

The earthquake happened off shore.

Affected provinces

Affected Populated Places

See complete places

Critical infrastructure

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

More information

Data resources

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

About the data


While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information. The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.