M 7.1 in Vanuatu on 20 Oct 2015 21:52 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: 7.1M
Depth: 127.05 Km
Event Date: 20 Oct 2015 21:52 UTC
21 Oct 2015 08:52 Local
Exposed Population: About 56000 people within 100km
Source: NEIC
Inserted at: 20 Oct 2015 22:36 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC n.a 0 0.5
Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0m  
  C2 earthquake n.a      
  Country Vulnerability n.a      
  INFORM_normalised n.a      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1102850 0.5 20 Oct 2015 21:52 7.2M, 150km N/A 60 thousand (in 100km) 0m (at 00:00) 00:06 GEOFON
1102853 0.5 20 Oct 2015 21:52 7.3M, 117km N/A 50 thousand (in 100km) 0m (at 00:00) 00:10 NTWC    
1102856 0.5 20 Oct 2015 21:52 7.3M, 131.04km N/A 60 thousand (in 100km) 0m (at 00:00) 00:19 NEIC
1102864 0.5 20 Oct 2015 21:52 7.1M, 127.05km 6.75 60 thousand (in 100km) 0m (at 00:00) 00:44 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.

Tsunami affected locations

Alert Date (UTC) Name Country Wave height (m)

See full locations list (RSS)


Initial conditions

Title: "M7.1 VANUATU"

Fault parameters

  • Latitude: -14.89
  • Longitude: 167.31
  • Length: 56 km
  • Width: 15 km
  • Magnitude: 7.1 M

Okada parameters:

  • Slip: 1.5 m
  • Strike: 365 (geogr angle: north=0, south=180)
  • Dip: 51 degree
  • Rake: 90 degree
  • Depth: 147 km

Calculation parameters

  • Calculation space (lon/lat): 162.81, -19.39, 171.81, -10.39
  • Instead of Step -> use Cell size:.75 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

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