M 6.5 in Vanuatu on 21 Aug 2018 22:32 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: 6.5M
Depth: 10 Km
Event Date: 21 Aug 2018 22:32 UTC
22 Aug 2018 09:32 Local
Exposed Population: About 85000 people within 100km
Source: GEOFON gfz2018qjpi
Inserted at: 21 Aug 2018 22:39 UTC
INFORM Coping capacity of the alert score:
6.1 (Vanuatu)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
GEOFON 0.7 0.2 0.7
gfz2018qjpi Scaled population (vector) 5.08 Max wave alert 0m  
  C1 earthquake 1 Max wave realtime 0.21m  
  C2 earthquake 0      
  Country Vulnerability 0      
  INFORM_normalised 1.12      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1225297 0.7 21 Aug 2018 22:32 6.5M, 10km N/A 90 thousand (in 100km) 0.2m (at 00:23) 00:07 GEOFON
1225298 0.9 21 Aug 2018 22:32 6.7M, 10km N/A 90 thousand (in 100km) 0.3m (at 00:00) 00:10 NTWC    
1225300 0.9 21 Aug 2018 22:32 6.7M, 10km N/A 90 thousand (in 100km) 0.2m (at 00:03) 00:11 PTWC
1225304 0.1 21 Aug 2018 22:32 6.7M, 30.34km N/A N/A (in MMI>=VII) 0.1m (at 01:49) 00:20 NEIC
1225308 0.2 21 Aug 2018 22:32 6.5M, 13.44km 6.56 427 (in MMI>=VII) 0.1m (at 00:23) 00:52 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

The maximum Wave height is  0.2m in Olal, Vanuatu. This height is estimated for 21-Aug-2018 22:41:18.

Alert Date (UTC) Name Country Wave height (m)
21-Aug-2018 22:41:18 Olal Vanuatu  0.2
21-Aug-2018 22:33:64 Lonbilingdoun Vanuatu  0.2
21-Aug-2018 22:55:75 Rerep Vanuatu  0.1
21-Aug-2018 22:55:75 Roghumbo Vanuatu  0.1
21-Aug-2018 22:51:91 Fonwor Vanuatu  0.1
21-Aug-2018 22:37:84 Ranvetlam Vanuatu  0.1
21-Aug-2018 23:21:85 Coulons Vanuatu  0.1
21-Aug-2018 23:16:63 Bourbar Vanuatu  0.1
21-Aug-2018 23:16:63 Lamap Vanuatu  0.1
21-Aug-2018 23:16:63 Meriver Vanuatu  0.1
21-Aug-2018 22:36:02 Linbul Vanuatu  0.1
21-Aug-2018 22:45:25 Endu_Pahakol Vanuatu  0.1
21-Aug-2018 23:30:93 Palikoulo Vanuatu  0.1
21-Aug-2018 22:51:91 Lambulmbatuei Vanuatu  0.1
21-Aug-2018 23:06:65 Asavagas Vanuatu  0.1
21-Aug-2018 23:16:63 Norsup Vanuatu  0.1
21-Aug-2018 22:58:46 Lakatoro Vanuatu  0.1
21-Aug-2018 23:19:21 Fali Vanuatu  0.1
21-Aug-2018 23:47:63 Hog_Harbour Vanuatu  0.1
21-Aug-2018 23:52:78 Iakobone Vanuatu  0.1
21-Aug-2018 23:03:07 Vao Vanuatu  0.1
21-Aug-2018 23:26:36 Laruru Vanuatu  0.1
21-Aug-2018 23:40:46 Longtal Vanuatu  0.1
21-Aug-2018 23:46:84 Halos Vanuatu  0.1
21-Aug-2018 23:45:18 Tafouale Vanuatu  0.1
21-Aug-2018 23:45:18 Ignal Vanuatu  0.1
21-Aug-2018 23:45:18 Vaoleli Vanuatu  0.1
21-Aug-2018 23:37:41 Pawe Vanuatu  0.1
21-Aug-2018 23:39:38 Peskarus Vanuatu  0.1
21-Aug-2018 23:11:31 Liro Vanuatu  0.1
21-Aug-2018 23:11:31 Lulep_Nesa Vanuatu  0.1

See full locations list (RSS)


Initial conditions

Title: "M6.5 Vanuatu Islands"

Fault parameters

  • Latitude: -15.98
  • Longitude: 168.18
  • Length: 28 km
  • Width: 7 km
  • Magnitude: 6.5 M

Okada parameters:

  • Slip: .8 m
  • Strike: 327 (geogr angle: north=0, south=180)
  • Dip: 42 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): 166.68, -17.48, 169.68, -14.48
  • 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.