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: 13.44 Km
Event Date: 21 Aug 2018 22:32 UTC
22 Aug 2018 09:32 Local
Exposed Population: Less then 100 people in MMI VII
About 86000 people within 100km
Source: NEIC us1000gf2g
Inserted at: 21 Aug 2018 23:25 UTC
INFORM Coping capacity of the alert score:
6.1 (Vanuatu)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0.2 0.1 0.2
us1000gf2g Scaled population (vector) 1.61 Max wave alert 0m  
  C1 shakemap -0.59 Max wave realtime 0.12m  
  C2 shakemap 0.53      
  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  0.1m in Rerep, Vanuatu. This height is estimated for 21-Aug-2018 22:55:75.

Alert Date (UTC) Name Country Wave height (m)
21-Aug-2018 22:55:75 Rerep Vanuatu  0.1
21-Aug-2018 22:55:75 Roghumbo Vanuatu  0.1
21-Aug-2018 23:40:46 Palikoulo Vanuatu  0.1
21-Aug-2018 22:34:24 Lonbilingdoun Vanuatu  0.1
21-Aug-2018 22:58:46 Norsup Vanuatu  0.1
21-Aug-2018 22:58:46 Lakatoro Vanuatu  0.1
21-Aug-2018 22:46:43 Endu_Pahakol Vanuatu  0.1
21-Aug-2018 22:36:02 Ranvetlam Vanuatu  0.1
21-Aug-2018 22:45:25 Fonwor Vanuatu  0.1
21-Aug-2018 23:10:22 Coulons Vanuatu  0.1
21-Aug-2018 23:54:23 Iakobone Vanuatu  0.1
21-Aug-2018 23:50:32 Hog_Harbour Vanuatu  0.1
21-Aug-2018 23:08:35 Vao Vanuatu  0.1
21-Aug-2018 23:08:35 Laruru Vanuatu  0.1
21-Aug-2018 22:34:24 Olal Vanuatu  0.1
21-Aug-2018 22:55:75 Meriver Vanuatu  0.1
21-Aug-2018 22:55:75 Bourbar Vanuatu  0.1
21-Aug-2018 22:55:75 Lamap Vanuatu  0.1
21-Aug-2018 23:06:65 Asavagas Vanuatu  0.1
21-Aug-2018 22:41:18 Lambulmbatuei Vanuatu  0.1
21-Aug-2018 23:28:65 Linbul Vanuatu  0.0

See full locations list (RSS)


Initial conditions

Title: "79km E of Lakatoro"

Fault parameters

  • Latitude: -16.017
  • Longitude: 168.153
  • 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: 13 km

Calculation parameters

  • Calculation space (lon/lat): 166.653, -17.517, 169.653, -14.517
  • 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.