M 6.9 in New Zealand from 21 Jul 2013 05:09 UTC to 05:09

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: 6.9M
Depth: 10.1 Km
Event Date: 21 Jul 2013 05:09 UTC
21 Jul 2013 17:09 Local
Exposed Population:
420000 people within 100km
Source: NEIC
Inserted at: 21 Jul 2013 07:29 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0.8 0.5 0.8
Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0.52m  
  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
1000744 0.8 21 Jul 2013 05:09 6.9M, 31km N/A 310 thousand (in 100km) 0.1m (at 00:25) 02:11 NEIC
1000745 0.8 21 Jul 2013 05:09 6.9M, 10.1km N/A 430 thousand (in 100km) 0.5m (at 01:04) 02:20 NEIC
1000748 0.1 21 Jul 2013 05:09 6.5M, 14km N/A 420 thousand (in 100km) 0.2m (at 01:06) 02:56 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  0.3m in Kekerengu, New Zealand. This height is estimated for 21-Jul-2013 06:01:38.

Alert Date (UTC) Name Country Wave height (m)
21-Jul-2013 06:01:38 Kekerengu New Zealand  0.3
21-Jul-2013 07:36:00 Kaikoura New Zealand  0.2
21-Jul-2013 06:10:64 Clarence New Zealand  0.2
21-Jul-2013 05:40:64 Okukari New Zealand  0.1
21-Jul-2013 06:55:38 Hapuku New Zealand  0.1
21-Jul-2013 06:55:38 Mangamaunu New Zealand  0.1
21-Jul-2013 05:49:64 Mirza New Zealand  0.1
21-Jul-2013 05:51:00 Wharanui New Zealand  0.1
21-Jul-2013 05:31:64 Wellington New Zealand  0.1
21-Jul-2013 05:31:64 Kilbirnie New Zealand  0.1
21-Jul-2013 05:31:64 Miramar New Zealand  0.1
21-Jul-2013 05:31:64 Seatoun New Zealand  0.1
21-Jul-2013 05:31:64 Island_Bay New Zealand  0.1
21-Jul-2013 05:31:64 Berhampore New Zealand  0.1
21-Jul-2013 06:19:38 Hataitai New Zealand  0.1
21-Jul-2013 05:30:00 Brooklyn New Zealand  0.1
21-Jul-2013 06:30:00 Oaro New Zealand  0.1
21-Jul-2013 06:30:00 Goose_Bay New Zealand  0.1
21-Jul-2013 07:03:00 Petone New Zealand  0.1
21-Jul-2013 07:03:00 Days_Bay New Zealand  0.1
21-Jul-2013 07:03:00 Korokoro New Zealand  0.1
21-Jul-2013 07:03:00 Lower_Hutt New Zealand  0.1
21-Jul-2013 07:07:64 Ngauranga New Zealand  0.1
21-Jul-2013 05:40:38 Onauku New Zealand  0.1
21-Jul-2013 07:31:38 Johnsonville New Zealand  0.1
21-Jul-2013 07:31:38 Wadestown New Zealand  0.1
21-Jul-2013 07:31:38 Ngaio New Zealand  0.1
21-Jul-2013 07:31:38 Kaiwharawhara New Zealand  0.1
21-Jul-2013 07:31:38 Khandallah New Zealand  0.1
21-Jul-2013 05:52:38 Titahi_Bay New Zealand  0.1
21-Jul-2013 05:52:38 Plimmerton New Zealand  0.1
21-Jul-2013 05:52:38 Paremata New Zealand  0.1
21-Jul-2013 07:25:64 Port_Robinson New Zealand  0.1
21-Jul-2013 06:01:38 Ward New Zealand  0.0

See full locations list (RSS)


Initial conditions

Title: " Cook Strait"

Fault parameters

  • Latitude: -41.775
  • Longitude: 174.545
  • Length: 44 km
  • Width: 12 km
  • Magnitude: 6.9 M

Okada parameters:

  • Slip: 1.2 m
  • Strike: 258 (geogr angle: north=0, south=180)
  • Dip: 24 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): 171.545, -44.775, 177.545, -38.775
  • Instead of Step -> use Cell size:.5 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.