M 6.8 in Chile on 01 Sep 2020 04:09 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: 23 Km
Event Date: 01 Sep 2020 04:09 UTC
01 Sep 2020 00:09 Local
Exposed Population: Less then 100 people in MMI VII
About 70000 people within 100km
Source: NEIC us7000bfjr
Inserted at: 02 Sep 2020 21:49 UTC
INFORM Coping capacity of the alert score:
3 (Chile)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NEIC 0 0.2 0.2
us7000bfjr Scaled population (raster) 1.57 Max wave alert 0.21m  
  C1 shakemap -1.16 Max wave realtime 0.21m  
  C2 shakemap 0.54      
  Country Vulnerability 0      
  INFORM_normalised 0.75      
Maximum expected impact using different data sources.
Click on image to zoom it.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1329544 0.4 01 Sep 2020 04:09 6.8M, 10km N/A 30 thousand (in 100km) 0.4m (at 00:09) 00:06 PTWC
1329547 0.4 01 Sep 2020 04:09 6.8M, 10km N/A 20 thousand (in 100km) 0.5m (at 00:11) 00:07 NTWC
1329548 0.1 01 Sep 2020 04:09 7M, 35km 6.45 1 thousand (in MMI>=VII) 0.2m (at 00:20) 00:43 NEIC
1329558 0.2 01 Sep 2020 04:09 6.8M, 23km 6.8 786 (in MMI>=VII) 0.2m (at 00:19) 1d 00:03 NEIC
1329936 0.2 01 Sep 2020 04:09 6.8M, 23km 6.8 786 (in MMI>=VII) 0.2m (at 00:07) 1d 17:39 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 Carrizal Bajo, Chile. This height is estimated for 1-Sep-2020 04:16:12.

Alert Date (UTC) Name Country Wave height (m)
1-Sep-2020 04:16:12 Carrizal Bajo Chile  0.2
1-Sep-2020 04:23:65 Barranquilla Chile  0.2
1-Sep-2020 04:44:53 Huasco Chile  0.1
1-Sep-2020 04:44:53 Huasco Bajo Chile  0.1
1-Sep-2020 04:49:76 Penita Chile  0.1
1-Sep-2020 04:47:75 Burro Muerto Chile  0.1

See full locations list (RSS)


Initial conditions

Title: ""M 6.8, 85 km NW of Vallenar, Chile""

Fault parameters

  • Latitude: -27.969
  • Longitude: -71.305
  • Length: 39 km
  • Width: 11 km
  • Magnitude: 6.8 M

Okada parameters:

  • Slip: 1 m
  • Strike: 14 (geogr angle: north=0, south=180)
  • Dip: 8 degree
  • Rake: 90 degree
  • Depth: 23 km

Calculation parameters

  • Calculation space (lon/lat): -74.305, -30.969, -68.305, -24.969
  • Instead of Step -> use Cell size:.5 minutes

Sea Level

More information

  • Timeline:
    Tsunami calculations performed to this case, click here

  • Montecarlo:
    Tsunami Montecarlo simulation performed to this case, click here

For a full list of available products related to this event, please refer to the GDACS Resources page.