M 5.6 in Ascension Island Region on 23 Jan 2018 23:09 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: 5.6M
Depth: 10 Km
Lat/Lon: -5.7538 , -12.5497
Event Date: 23 Jan 2018 23:09 UTC
23 Jan 2018 22:09 Local
Exposed Population: No people within 100km
Source: NEIC us2000cngh
Inserted at: 23 Jan 2018 23:28 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
us2000cngh Scaled population (vector) -8  
  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
1195346 0 23 Jan 2018 23:09 5.6M, 10km 1.93 N/A (in MMI>=VII) 00:18 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 1195346 -5.754/-12.55 5.6 10 1.92 23 Jan 2018 23:30 00:21 (new episode)
2 0 1195346 -5.754/-12.55 5.6 10 1.93 24 Jan 2018 01:11 02:02 (upd of #1)
3 0 1195346 -5.777/-12.543 5.6 10 1.93 14 Mar 2018 08:38 49d 09:29 (upd of #2)

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.