M 7.3 in New Zealand on 04 Mar 2021 13:27 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: 7.3M
Depth: 10 Km
Event Date: 04 Mar 2021 13:27 UTC
04 Mar 2021 01:27 Local
Exposed Population: Less then 100 people in MMI VI
No people within 100km
Source: NTWC at00qpg5dz
Inserted at: 04 Mar 2021 13:58 UTC
INFORM Coping capacity of the alert score:
1.1 (New Zealand)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 Tsunami GDACS score
NTWC 0 0.4 0.4
at00qpg5dz Scaled population (raster) 0 Max wave alert 0.48m  
  C1 shakemap -0.59 Max wave realtime 0.48m  
  C2 shakemap 0.53      
  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
1361949 0.4 04 Mar 2021 13:27 7.3M, 10km N/A No people affected (in 100km) 0.5m (at 01:06) 00:11 PTWC
1361950 0.4 04 Mar 2021 13:27 7.3M, 10km N/A No people affected (in 100km) 0.5m (at 01:08) 00:20 NTWC
1361951 0.4 04 Mar 2021 13:27 7.3M, 10km N/A No people affected (in 100km) 0.5m (at 01:06) 00:16 PTWC
1361952 0.4 04 Mar 2021 13:27 7.3M, 10km 6.44 N/A (in MMI>=VII) 0.5m (at 01:08) 00:30 NTWC
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  0.5m in Port Awanui, New Zealand. This height is estimated for 4-Mar-2021 14:35:14.

Alert Date (UTC) Name Country Wave height (m)
4-Mar-2021 14:35:14 Port Awanui New Zealand  0.5
4-Mar-2021 14:29:77 Horoera New Zealand  0.4
4-Mar-2021 14:17:98 Whareponga New Zealand  0.4
4-Mar-2021 14:33:33 Tuparoa New Zealand  0.3
4-Mar-2021 14:39:34 East Cape New Zealand  0.2
4-Mar-2021 15:09:78 Whangara New Zealand  0.2
4-Mar-2021 14:11:46 Raukokore New Zealand  0.1
4-Mar-2021 15:01:13 Torere New Zealand  0.1
4-Mar-2021 14:11:46 Mahia New Zealand  0.1
4-Mar-2021 14:41:56 Te Kaha New Zealand  0.1
4-Mar-2021 14:25:17 Makaraka New Zealand  0.1
4-Mar-2021 14:25:17 Gisborne New Zealand  0.1
4-Mar-2021 14:29:77 Cape Runaway New Zealand  0.1
4-Mar-2021 14:29:77 Whangaparaoa New Zealand  0.1
4-Mar-2021 15:47:95 Opotiki New Zealand  0.1
4-Mar-2021 14:05:75 Waihau Bay New Zealand  0.1
4-Mar-2021 15:23:71 Pakiri New Zealand  0.1
4-Mar-2021 15:57:49 Omaio New Zealand  0.1
4-Mar-2021 15:31:63 Gisborne New Zealand  0.1
4-Mar-2021 14:51:72 Houpoto New Zealand  0.1
4-Mar-2021 14:31:43 Herbertville New Zealand  0.1
4-Mar-2021 14:31:43 Akitio New Zealand  0.1
4-Mar-2021 14:33:33 Whakataki New Zealand  0.1
4-Mar-2021 14:35:14 Homewood New Zealand  0.1
4-Mar-2021 14:47:39 Whakaki New Zealand  0.1
4-Mar-2021 15:55:21 Kuaotunu New Zealand  0.1
4-Mar-2021 14:51:72 Wairoa New Zealand  0.1
4-Mar-2021 14:59:86 Matapouri New Zealand  0.1
4-Mar-2021 15:37:35 Leigh New Zealand  0.1

See full locations list (RSS)


Initial conditions

Title: ""M 7.3, 238 km ENE of Gisborne, New Zealand""

Fault parameters

  • Latitude: -37.8
  • Longitude: -179.5
  • Length: 70 km
  • Width: 19 km
  • Magnitude: 7.3 M

Okada parameters:

  • Slip: 1.9 m
  • Strike: (geogr angle: north=0, south=180)
  • Dip: 45 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -185.5, -43.8, -173.5, -31.8
  • Instead of Step -> use Cell size:1 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.