M 7.3 in South Georgia & the South Sandwich Is. from 28 May 2016 09:46 UTC to 09:47

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: 7.3M
Depth: 103 Km
Event Date: 28 May 2016 09:47 UTC
28 May 2016 07:47 Local
Exposed Population: No people within 100km
Source: NTWC    
Inserted at: 28 May 2016 10:03 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NTWC     n.a 1 0.5
Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0m  
  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
1129519 0.5 28 May 2016 09:47 7M, 108km N/A No people affected (in 100km) 0m (at 00:00) 00:08 GEOFON
1129523 0.5 28 May 2016 09:47 7.3M, 103km N/A No people affected (in 100km) 0m (at 00:00) 00:15 NTWC    
1129528 0.5 28 May 2016 09:47 7.3M, 93.17km 6.22 No people affected (in 100km) 0m (at 00:00) 00:21 NEIC
1129532 0.5 28 May 2016 09:46 7.2M, 72.68km 6.22 No people affected (in 100km) 0m (at 00:00) 00:43 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: "M7.3 69km NNE of Visokoi Island. South Georgia and the South Sandwich Islands"

Fault parameters

  • Latitude: -56.1
  • Longitude: -26.9
  • Length: 70 km
  • Width: 19 km
  • Magnitude: 7.3 M

Okada parameters:

  • Slip: 1.9 m
  • Strike: 301 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 103 km

Calculation parameters

  • Calculation space (lon/lat): -32.9, -62.1, -20.9, -50.1
  • Instead of Step -> use Cell size:.61 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.