M 6.6 in Chile on 21 Sep 2015 17:40 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: 34.29 Km
Event Date: 21 Sep 2015 17:40 UTC
21 Sep 2015 14:40 Local
Exposed Population: 180000 people within 100km
Source: NEIC
Inserted at: 21 Sep 2015 19:33 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0.5 0 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
1098578 0.5 21 Sep 2015 17:40 6.6M, 34km N/A 210 thousand (in 100km) 0m (at 00:00) 00:06 GEOFON
1098580 0.5 21 Sep 2015 17:39 6.5M, 33km N/A 180 thousand (in 100km) 0m (at 00:36) 00:08 NTWC    
1098586 0.5 21 Sep 2015 17:39 6.5M, 24.7km 6.22 190 thousand (in 100km) 0.1m (at 00:22) 00:20 NEIC
1098608 0.5 21 Sep 2015 17:40 6.6M, 34.29km 6.22 190 thousand (in 100km) 0m (at 00:00) 01:53 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: "M6.6 45km WSW of Illapel. Chile"

Fault parameters

  • Latitude: -31.747
  • Longitude: -71.629
  • Length: 31 km
  • Width: 8 km
  • Magnitude: 6.6 M

Okada parameters:

  • Slip: .9 m
  • Strike: 2 (geogr angle: north=0, south=180)
  • Dip: 15 degree
  • Rake: 90 degree
  • Depth: 34 km

Calculation parameters

  • Calculation space (lon/lat): -73.129, -33.246, -70.129, -30.247
  • 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.