M 6.8 in Solomon Islands on 20 May 2015 22:48 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: 6.8M
Depth: 12 Km
Event Date: 20 May 2015 22:48 UTC
21 May 2015 09:48 Local
Exposed Population: No people within 100km
Source: NEIC
Inserted at: 20 May 2015 23:55 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0 0.2 0.5
Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0.16m  
  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
1081266 0.5 20 May 2015 22:48 6.6M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:08 GEOFON
1081268 0.2 20 May 2015 22:48 6.9M, 10km N/A No people affected (in 100km) 0.2m (at 00:31) 00:10 NTWC    
1081277 0 20 May 2015 22:48 6.9M, 19.85km N/A No people affected (in 100km) 0.1m (at 00:37) 00:20 NEIC
1081288 0.5 20 May 2015 22:48 6.8M, 12km 4.1 No people affected (in 100km) 0.2m (at 00:29) 01:06 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 Nafinotoga, Solomon Islands. This height is estimated for 20-May-2015 23:16:38.

Alert Date (UTC) Name Country Wave height (m)
20-May-2015 23:16:38 Nafinotoga Solomon Islands  0.2
20-May-2015 23:16:38 Ragapu Solomon Islands  0.2
20-May-2015 23:21:00 Tawarogha Solomon Islands  0.2
20-May-2015 23:21:00 Mwarairaru Solomon Islands  0.2
20-May-2015 23:21:00 Nasuragena Solomon Islands  0.2
20-May-2015 23:18:00 Paa Solomon Islands  0.2
20-May-2015 23:18:00 Naparaoinawa Solomon Islands  0.2
20-May-2015 23:18:00 Maniate Solomon Islands  0.2
20-May-2015 23:18:00 Tawasu Solomon Islands  0.2
20-May-2015 23:16:38 Nahahau Solomon Islands  0.1
20-May-2015 23:16:38 Manakia Solomon Islands  0.1
20-May-2015 23:30:00 Naparaohau Solomon Islands  0.1
20-May-2015 23:30:00 Naana Solomon Islands  0.1
20-May-2015 23:16:38 Maniborkosi Solomon Islands  0.1
20-May-2015 23:16:38 Ghupuna Solomon Islands  0.1
20-May-2015 23:16:38 Santa_Ana_I Solomon Islands  0.1
20-May-2015 23:24:00 Ngagatari Solomon Islands  0.1
20-May-2015 23:24:00 Tawani Solomon Islands  0.1
20-May-2015 23:24:00 Manewiriwiri Solomon Islands  0.1
20-May-2015 23:19:64 Ngorangora Solomon Islands  0.1
20-May-2015 23:19:64 Taheramo Solomon Islands  0.1
20-May-2015 23:37:64 Wango Solomon Islands  0.1
20-May-2015 23:25:64 Mami Solomon Islands  0.1
20-May-2015 23:25:64 Fageifa Solomon Islands  0.1
20-May-2015 23:24:00 Nakuhu Solomon Islands  0.1
20-May-2015 23:24:00 Naganea Solomon Islands  0.1
20-May-2015 23:19:64 Sioduru Solomon Islands  0.1
20-May-2015 23:22:64 Arohane Solomon Islands  0.1
20-May-2015 23:22:64 Ngorangora Solomon Islands  0.1
20-May-2015 23:24:00 Napurongo Solomon Islands  0.1
20-May-2015 23:34:64 Narano Solomon Islands  0.1
20-May-2015 23:22:38 Mwanimauru Solomon Islands  0.1
20-May-2015 23:22:38 Manchuki Solomon Islands  0.1
20-May-2015 23:36:00 Ahia Solomon Islands  0.1
20-May-2015 23:37:64 Star_Harb Solomon Islands  0.1
20-May-2015 23:37:64 Geta Solomon Islands  0.1
21-May-2015 00:03:00 Sungasau Solomon Islands  0.1
21-May-2015 00:03:00 Tawarodo Solomon Islands  0.1
21-May-2015 00:03:00 Hulihale Solomon Islands  0.1
21-May-2015 00:03:00 Bio_I Solomon Islands  0.1
21-May-2015 00:03:00 Suenn Solomon Islands  0.1
20-May-2015 23:22:38 Ulawa_I Solomon Islands  0.1
20-May-2015 23:22:38 Mwarada Solomon Islands  0.1
20-May-2015 23:55:64 Funakumwa Solomon Islands  0.1
21-May-2015 00:40:38 Kaonasughu Solomon Islands  0.1
21-May-2015 00:40:38 Waimapuru Solomon Islands  0.1
21-May-2015 00:40:38 Pamua Solomon Islands  0.1
20-May-2015 23:28:64 Malemgeulu Solomon Islands  0.1
20-May-2015 23:27:00 Saa Solomon Islands  0.1
20-May-2015 23:43:38 Malou Solomon Islands  0.1
20-May-2015 23:43:38 Olomburi Solomon Islands  0.1
20-May-2015 23:55:64 Matamotu Solomon Islands  0.1
20-May-2015 23:22:64 Nama Solomon Islands  0.1
20-May-2015 23:22:64 Lale Solomon Islands  0.1
20-May-2015 23:25:38 Mwaniwowo Solomon Islands  0.1
20-May-2015 23:27:00 Anoni'usu Solomon Islands  0.1
20-May-2015 23:04:64 Menamini Solomon Islands  0.1

See full locations list (RSS)


Initial conditions

Title: "M6.8 SANTA CRUZ ISLANDS REGION"

Fault parameters

  • Latitude: -10.86
  • Longitude: 164.07
  • Length: 39 km
  • Width: 11 km
  • Magnitude: 6.8 M

Okada parameters:

  • Slip: 1 m
  • Strike: 262 (geogr angle: north=0, south=180)
  • Dip: 25 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): 161.07, -13.86, 167.07, -7.86
  • 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.