M 7.3 in New Zealand from 04 Mar 2021 13:27 UTC to 13:27

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: No people within 100km
Source: PTWC pt21063000
Inserted at: 04 Mar 2021 13:38 UTC
INFORM Coping capacity of the alert score:
1.1 (New Zealand)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
PTWC 0 0.4 0.4
pt21063000 Scaled population (vector) 0 Max wave alert 0.48m  
  C1 earthquake 1 Max wave realtime 0.48m  
  C2 earthquake 0      
  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 Whareponga, New Zealand. This height is estimated for 4-Mar-2021 14:33:89.

Alert Date (UTC) Name Country Wave height (m)
4-Mar-2021 14:33:89 Whareponga New Zealand  0.5
4-Mar-2021 14:25:37 Port Awanui New Zealand  0.4
4-Mar-2021 14:27:07 Tokomaru Bay New Zealand  0.3
4-Mar-2021 13:59:28 East Cape New Zealand  0.2
4-Mar-2021 14:01:08 Horoera New Zealand  0.2
4-Mar-2021 14:39:92 Cape Runaway New Zealand  0.2
4-Mar-2021 14:17:56 Muriwai New Zealand  0.2
4-Mar-2021 14:29:51 Te Araroa New Zealand  0.2
4-Mar-2021 14:25:37 Waihau Bay New Zealand  0.1
4-Mar-2021 14:31:43 Gisborne New Zealand  0.1
4-Mar-2021 14:05:07 Whangara New Zealand  0.1
4-Mar-2021 14:09:57 Raukokore New Zealand  0.1
4-Mar-2021 15:25:68 Gisborne New Zealand  0.1
4-Mar-2021 14:25:37 Te Kaha New Zealand  0.1
4-Mar-2021 15:03:88 Houpoto New Zealand  0.1
4-Mar-2021 14:51:05 Tuhara New Zealand  0.1
4-Mar-2021 15:47:18 Kawau Island New Zealand  0.1
4-Mar-2021 14:31:43 Herbertville New Zealand  0.1
4-Mar-2021 14:35:02 Whakataki New Zealand  0.1
4-Mar-2021 14:49:05 Whakaki New Zealand  0.1
4-Mar-2021 14:53:03 Tangoio New Zealand  0.1
4-Mar-2021 16:19:54 Torere New Zealand  0.1
4-Mar-2021 14:35:02 Homewood New Zealand  0.1
4-Mar-2021 15:15:01 Opotiki New Zealand  0.1
4-Mar-2021 14:41:54 Waihi Beach New Zealand  0.1
4-Mar-2021 14:55:46 Wairoa New Zealand  0.1
4-Mar-2021 14:55:46 Motairehe New Zealand  0.1
4-Mar-2021 14:23:09 Whangawehi New Zealand  0.1
4-Mar-2021 16:21:07 Omaio New Zealand  0.1
4-Mar-2021 16:29:56 Napier New Zealand  0.1

See full locations list (RSS)


Initial conditions

Title: ""236 km ENE of Gisborne""

Fault parameters

  • Latitude: -37.774
  • Longitude: -179.535
  • 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): -185.535, -43.774, -173.535, -31.774
  • 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.