M 6.6 in Vanuatu from 10 Sep 2018 19:31 UTC to 19:31

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: 6.6M
Depth: 10 Km
Event Date: 10 Sep 2018 19:31 UTC
11 Sep 2018 06:31 Local
Exposed Population: No people within 100km
Source: NTWC     at00peuu8u
Inserted at: 10 Sep 2018 19:39 UTC
INFORM Coping capacity of the alert score:
1.1 (New Caledonia)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NTWC     0 0 0
at00peuu8u Scaled population (vector) 0 Max wave alert 0m  
  C1 earthquake 1 Max wave realtime 0m  
  C2 earthquake 0      
  Country Vulnerability 0      
  INFORM_normalised 1      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1227823 0 10 Sep 2018 19:31 6.6M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:06 PTWC
1227826 0 10 Sep 2018 19:31 6.6M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:07 NTWC    
1227829 0 10 Sep 2018 19:31 6.1M, 10km 3.62 N/A (in MMI>=VII) 00:20 NEIC
1227837 0 10 Sep 2018 19:31 6.3M, 12km 3.76 N/A (in MMI>=VII) 0m (at 00:00) 01:36 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: "M6.6 215km W of Ile Hunter. New Caledonia"

Fault parameters

  • Latitude: -22.082
  • Longitude: 169.985
  • Length: 31 km
  • Width: 8 km
  • Magnitude: 6.6 M

Okada parameters:

  • Slip: .9 m
  • Strike: 311 (geogr angle: north=0, south=180)
  • Dip: 20 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): 168.485, -23.582, 171.485, -20.582
  • Instead of Step -> use Cell size:.25 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.