M 6.9 in Vanuatu on 23 Jan 2015 03:47 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: 6.9M
Depth: 198 Km
Event Date: 23 Jan 2015 03:47 UTC
23 Jan 2015 14:47 Local
Exposed Population:
About 63000 people within 100km
Source: NEIC
Inserted at: 23 Jan 2015 03:57 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC n.a 1 0
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
1070177 0 23 Jan 2015 03:47 6.8M, 218km N/A 70 thousand (in 100km) 0m (at 00:00) 00:06 GEOFON
1070178 0.1 23 Jan 2015 03:47 7M, 33km N/A 60 thousand (in 100km) 0.2m (at 00:30) 00:07 NEIC
1070180 0.1 23 Jan 2015 03:47 7M, 33km N/A 60 thousand (in 100km) 0.2m (at 00:30) 00:07 USGS
1070181 0 23 Jan 2015 03:47 6.9M, 198km N/A 60 thousand (in 100km) 0m (at 00:00) 00:08 USGS
1070182 0 23 Jan 2015 03:47 6.9M, 198km N/A 60 thousand (in 100km) 0m (at 00:00) 00:09 NEIC
1070183 0 23 Jan 2015 03:47 6.8M, 218.54km N/A 70 thousand (in 100km) 0m (at 00:00) 00:19 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: "M6.9 Off-shore"

Fault parameters

  • Latitude: -17.3
  • Longitude: 168.6
  • Length: 44 km
  • Width: 12 km
  • Magnitude: 6.9 M

Okada parameters:

  • Slip: 1.2 m
  • Strike: 341 (geogr angle: north=0, south=180)
  • Dip: 49 degree
  • Rake: 90 degree
  • Depth: 198 km

Calculation parameters

  • Calculation space (lon/lat): 165.6, -20.3, 171.6, -14.3
  • Instead of Step -> use Cell size:.5 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.