M 6.6 in South Georgia and the South Sandwich Islands on 05 Apr 2019 16:14 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: 6.6M
Depth: 60.8 Km
Event Date: 05 Apr 2019 16:14 UTC
05 Apr 2019 14:14 Local
Exposed Population: No people within 100km
Source: PTWC pt19095001
Inserted at: 05 Apr 2019 16:25 UTC
INFORM Coping capacity of the alert score:
1.1 (South Georgia & the South Sandwich Is.)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
PTWC 0 0 0
pt19095001 Scaled population (vector) 0 Max wave alert 0m  
  C1 earthquake 1 Max wave realtime 0m  
  C2 earthquake 0      
  Country Vulnerability 0      
  INFORM_normalised 1      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1255204 0 05 Apr 2019 16:14 6.5M, 10km N/A No people affected (in 100km) 0m (at 00:00) 00:08 GEOFON
1255206 0 05 Apr 2019 16:14 6.6M, 60.8km N/A No people affected (in 100km) 0m (at 00:00) 00:11 PTWC
1255208 0 05 Apr 2019 16:14 6.6M, 61km N/A No people affected (in 100km) 0m (at 00:00) 00:13 NTWC
1255210 0 05 Apr 2019 16:14 6.5M, 58.41km N/A N/A (in MMI>=VII) 0m (at 00:00) 00:19 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: ""136km NNW of Visokoi Island""

Fault parameters

  • Latitude: -55.506
  • Longitude: -27.69
  • Length: 31 km
  • Width: 8 km
  • Magnitude: 6.6 M

Okada parameters:

  • Slip: .9 m
  • Strike: 301 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 61 km

Calculation parameters

  • Calculation space (lon/lat): -29.19, -57.006, -26.19, -54.006
  • 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.