M 6.5 in Tonga on 23 Nov 2013 07:48 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: 6.5M
Depth: 377.07 Km
Event Date: 23 Nov 2013 07:48 UTC
22 Nov 2013 19:48 Local
Exposed Population:
No people within 100km
Source: NEIC
Inserted at: 23 Nov 2013 08:08 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0 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
1023423 0 23 Nov 2013 07:48 6.4M, 387.6km N/A No people affected (in 100km) 00:07 USGS
1023425 0 23 Nov 2013 07:48 6.4M, 387.6km N/A No people affected (in 100km) 00:11 NEIC
1023426 0.5 23 Nov 2013 07:48 6.5M, 377.07km N/A No people affected (in 100km) 0m (at 00:00) 00:20 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: " Fiji region"

Fault parameters

  • Latitude: -17.1
  • Longitude: -176.56
  • Length: 28 km
  • Width: 7 km
  • Magnitude: 6.5 M

Okada parameters:

  • Slip: .8 m
  • Strike: 82 (geogr angle: north=0, south=180)
  • Dip: 80 degree
  • Rake: 90 degree
  • Depth: 377 km

Calculation parameters

  • Calculation space (lon/lat): -178.06, -18.6, -175.06, -15.6
  • 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.