M 7.4 in South Georgia and the South Sandwich Islands from 19 Aug 2016 07:32 UTC to 07:32

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: 7.4M
Depth: 10 Km
Event Date: 19 Aug 2016 07:32 UTC
19 Aug 2016 05:32 Local
Exposed Population: No people within 100km
Source: GEOFON gfz2016qgqd
Inserted at: 19 Aug 2016 07:40 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
GEOFON 0 1 0.5
gfz2016qgqd Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0.05m  
  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
1137078 0.5 19 Aug 2016 07:32 7.4M, 10km N/A No people affected (in 100km) 0.1m (at 01:58) 00:08 GEOFON
1137082 0.5 19 Aug 2016 07:32 7.4M, 10km N/A No people affected (in 100km) 0.1m (at 01:58) 00:21 NEIC
1137102 0.5 19 Aug 2016 07:32 7.4M, 10km N/A No people affected (in 100km) 0m (at 00:00) 01:33 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 Grytviken, South Georgia / South Sandwich Islands. This height is estimated for 19-Aug-2016 09:30:81.

Alert Date (UTC) Name Country Wave height (m)
19-Aug-2016 09:30:81 Grytviken South Georgia / South Sandwich Islands  0.1

See full locations list (RSS)


Initial conditions

Title: "M7.4 South Georgia Island Region"

Fault parameters

  • Latitude: -55.36
  • Longitude: -31.99
  • Length: 79 km
  • Width: 22 km
  • Magnitude: 7.4 M

Okada parameters:

  • Slip: 2 m
  • Strike: 286 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -39.49, -62.86, -24.49, -47.86
  • Instead of Step -> use Cell size:.76 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.