M 5.5 in Southwest Indian Ridge on 10 Jul 2018 16:05 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: 5.5M
Depth: 10 Km
Lat/Lon: -31.5837 , 58.1366
Event Date: 10 Jul 2018 16:05 UTC
10 Jul 2018 20:05 Local
Exposed Population: No people within 100km
Source: NEIC us2000g1ay
Inserted at: 10 Jul 2018 16:26 UTC
INFORM Coping capacity of the alert score: 1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us2000g1ay Scaled population (vector) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 1  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1218854 0 10 Jul 2018 16:05 5.5M, 10km N/A N/A (in MMI>=VII) 00:21 NEIC
1218871 0 10 Jul 2018 16:05 5.6M, 10km N/A N/A (in MMI>=VII) 02:13 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 unknowed a zone. The alertlevel for this event is GREEN

Intensity Population
no people
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1218854 -31.584/58.137 5.5 10 0 10 Jul 2018 16:33 00:28 (new episode)
2 0 1218854 -31.601/58.133 5.5 10 0 10 Jul 2018 17:33 01:28 (upd of #1)
3 0 1218854 -31.601/58.133 5.5 10 0 10 Jul 2018 18:12 02:07 (upd of #2)
4 0 1218871 -31.601/58.133 5.5 10 0 10 Jul 2018 18:18 02:13 (new episode)
5 0 1218871 -31.604/58.134 5.6 10 0 10 Jul 2018 18:24 02:19 (upd of #4)

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.