M 5.5 in Volcano Islands, Japan Region on 17 Aug 2018 22:06 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: 18.1 Km
Lat/Lon: 23.4791 , 143.3467
Event Date: 17 Aug 2018 22:06 UTC
18 Aug 2018 08:06 Local
Exposed Population: No people within 100km
Source: NEIC us1000gbz1
Inserted at: 18 Aug 2018 05:46 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
us1000gbz1 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
1224498 0 17 Aug 2018 22:06 5.6M, 8.28km 2.78 N/A (in MMI>=VII) 00:27 NEIC
1224561 0 17 Aug 2018 22:06 5.5M, 18.1km 2.78 N/A (in MMI>=VII) 07:39 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
2200 people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1224498 23.511/143.351 5.6 8.28 2.48 17 Aug 2018 22:34 00:27 (new episode)
2 0 1224498 23.511/143.351 5.6 8.28 2.78 18 Aug 2018 00:09 02:03 (upd of #1)
3 0 1224561 23.511/143.351 5.6 8.28 2.78 18 Aug 2018 05:46 07:39 (new episode)
4 0 1224561 23.479/143.347 5.5 18.1 2.21 18 Aug 2018 05:46 07:39 (upd of #3)

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.