M 6.3 in Vanuatu on 23 Jan 2024 14:33 UTC

Hazard models

Rapid Impact
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: 6.3M
Depth: 31 Km
Event Date: 23 Jan 2024 14:33 UTC
24 Jan 2024 01:33 Local
Exposed Population: 3 thousand in MMI VI
Source: NEIC us7000lt73
Inserted at: 26 Jan 2024 22:25 UTC
INFORM Coping capacity of the alert score:
1.1 (Vanuatu)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Rapid Impact)		 Tsunami GDACS score
NEIC 0 0 0
us7000lt73 Scaled population (vector) 0 Max wave alert 0m  
  C1 rapid impact 0 Max wave realtime 0m  
  C2 rapid impact 0      
  Country Vulnerability 0      
  INFORM_normalised 0      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1548850 0.3 23 Jan 2024 14:33 6.5M, 10km 5.2 50 thousand (in 100km) 0.3m (at 00:08) 00:06 PTWC
1548852 0.3 23 Jan 2024 14:33 6.5M, 10km 5.35 50 thousand (in 100km) 0.4m (at 00:13) 00:08 NTWC
1548855 0 23 Jan 2024 14:33 6.3M, 37.2km 5.28 N/A (in MMI>=VII) 0m (at 00:00) 00:19 NEIC
1549439 0 23 Jan 2024 14:33 6.3M, 31km 5.66 3 thousand (in 100km) 0m (at 00:00) 3d 07:51 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: ""40 km SW of Port-Vila""

Fault parameters

  • Latitude: -17.996
  • Longitude: 168.046
  • Length: 22 km
  • Width: 6 km
  • Magnitude: 6.3 M

Okada parameters:

  • Slip: .6 m
  • Strike: 348 (geogr angle: north=0, south=180)
  • Dip: 44 degree
  • Rake: 90 degree
  • Depth: 31 km

Calculation parameters

  • Calculation space (lon/lat): 166.546, -19.496, 169.546, -16.496
  • Instead of Step -> use Cell size:.25 minutes

Sea Level

More information

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

  • Montecarlo:
    Tsunami Montecarlo simulation performed to this case, click here

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