M 7.8 Earthquake and Tsunami (2 m) in Kermadec Islands, New Zealand from 04 Mar 2021 19:28 UTC to 19:28

Hazard models

EQ parameters
Shakemap
Tsunami

Event summary

This earthquake is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude: 7.8M
Depth: 10 Km
Event Date: 04 Mar 2021 19:28 UTC
04 Mar 2021 07:28 Local
Exposed Population: No people within 100km
Source: NEIC us7000dflf
Inserted at: 04 Mar 2021 19:58 UTC
INFORM Coping capacity of the alert score:
1.1 ()

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 0 1.5 1.5
us7000dflf Scaled population (vector) 0 Max wave alert 2.02m  
  C1 earthquake 1 Max wave realtime 2.02m  
  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
1362118 1.1 04 Mar 2021 19:28 8M, 10km N/A No people affected (in 100km) 1.3m (at 00:18) 00:14 PTWC
1362120 1.5 04 Mar 2021 19:28 8M, 10km N/A No people affected (in 100km) 2.1m (at 00:18) 00:19 NTWC
1362129 1.5 04 Mar 2021 19:28 7.8M, 10km N/A No people affected (in 100km) 2m (at 00:10) 01:42 NEIC
1362131 1.5 04 Mar 2021 19:28 8M, 10km N/A No people affected (in 100km) 2.1m (at 00:18) 01:30 NTWC
1362132 1.5 04 Mar 2021 19:28 7.8M, 10km N/A No people affected (in 100km) 2m (at 00:10) 00:43 NEIC
1362133 1.5 04 Mar 2021 19:28 8M, 10km N/A No people affected (in 100km) 2.1m (at 00:18) 00:38 NTWC
1362136 1.5 04 Mar 2021 19:28 7.8M, 10km N/A No people affected (in 100km) 2m (at 00:10) 00:30 NEIC
1362139 1.1 04 Mar 2021 19:28 8M, 10km N/A No people affected (in 100km) 1.3m (at 00:18) 00:56 PTWC
1362140 1.5 04 Mar 2021 19:28 7.8M, 10km 7.21 No people affected (in 100km) 2m (at 00:10) 00:51 NEIC
1362143 1.3 04 Mar 2021 19:28 8.1M, 10km 7.21 No people affected (in 100km) 1.7m (at 00:14) 00:46 NEIC
1362145 1.7 04 Mar 2021 19:28 8.1M, 19.4km 8.7 No people affected (in 100km) 2.4m (at 00:10) 01:01 NEIC
1362590 1.5 04 Mar 2021 19:28 8.1M, 26.45km 8.69 N/A (in MMI>=VII) 2.2m (at 00:10) 22:43 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  2.0m in Raoul Island Boat Cove, New Zealand. This height is estimated for 4-Mar-2021 19:38:02.

Alert Date (UTC) Name Country Wave height (m)
4-Mar-2021 19:38:02 Raoul Island Boat Cove New Zealand  2.0
4-Mar-2021 19:38:02 Raoul Island Fishing Rock New Zealand  2.0
4-Mar-2021 22:50:88 Ongea Fiji  0.3
4-Mar-2021 23:30:17 Namara Fiji  0.2
4-Mar-2021 23:48:47 Cape Runaway New Zealand  0.2
4-Mar-2021 23:48:47 Whangaparaoa New Zealand  0.2
4-Mar-2021 23:10:75 Monothaki Fiji  0.2
4-Mar-2021 23:14:19 Motutangi New Zealand  0.2
4-Mar-2021 22:14:98 Tutukaka New Zealand  0.2
4-Mar-2021 23:54:66 Soso Fiji  0.2
4-Mar-2021 22:50:88 Ohonua Tonga  0.2
4-Mar-2021 21:56:52 Mburelevu Fiji  0.2
4-Mar-2021 22:50:88 Mbatiri Fiji  0.2
4-Mar-2021 22:22:56 Nasau Fiji  0.2
4-Mar-2021 23:18:65 Nukunuku Tonga  0.2
4-Mar-2021 23:18:65 Houma Tonga  0.2
4-Mar-2021 21:58:47 Kaduvu Fiji  0.2
4-Mar-2021 23:36:12 Fuaamotu Tonga  0.1
4-Mar-2021 23:52:75 Te Kaha New Zealand  0.1
4-Mar-2021 22:58:34 Vunisea Fiji  0.1
4-Mar-2021 22:12:64 Lomawal Fiji  0.1
4-Mar-2021 22:44:95 Waihau Bay New Zealand  0.1
4-Mar-2021 22:36:13 Andako Fiji  0.1
4-Mar-2021 22:16:11 Namuka Fiji  0.1
4-Mar-2021 22:54:84 Motairehe New Zealand  0.1
4-Mar-2021 21:44:52 Merita New Zealand  0.1
4-Mar-2021 22:20:54 Vabea Fiji  0.1
4-Mar-2021 23:10:75 Liku Fiji  0.1
4-Mar-2021 22:54:84 Tryphena New Zealand  0.1
4-Mar-2021 23:46:46 Claris New Zealand  0.1
4-Mar-2021 23:46:46 Okupu New Zealand  0.1
4-Mar-2021 22:58:34 Suva Fiji  0.1
4-Mar-2021 22:58:34 Tamavua Fiji  0.1
4-Mar-2021 23:40:14 Ahipara New Zealand  0.1
4-Mar-2021 20:06:95 640NM Northeast of Auckland- New Zealand Station 54401  0.1
4-Mar-2021 23:58:15 Niutoua Tonga  0.1
4-Mar-2021 22:08:53 Nalotu Fiji  0.1
4-Mar-2021 22:48:55 Levuka Fiji  0.1
4-Mar-2021 22:04:28 Bouwanga Fiji  0.1
4-Mar-2021 21:56:52 Vatukarasa Fiji  0.1
5-Mar-2021 00:00:05 Puhau New Zealand  0.1
5-Mar-2021 00:00:05 Omapere New Zealand  0.1
4-Mar-2021 23:20:91 Foui Tonga  0.1
4-Mar-2021 23:08:25 Houpoto New Zealand  0.1
4-Mar-2021 22:42:55 Talaulia Fiji  0.1
4-Mar-2021 21:56:52 Korolevu Fiji  0.1
4-Mar-2021 22:46:13 Yanutha Fiji  0.1
4-Mar-2021 22:08:53 Waisomo Fiji  0.1
4-Mar-2021 22:08:53 Dakuimbeqa Fiji  0.1
4-Mar-2021 23:36:12 Vione Fiji  0.1
4-Mar-2021 23:46:46 Whangape New Zealand  0.1
4-Mar-2021 23:46:46 Pawarenga New Zealand  0.1
4-Mar-2021 23:54:66 Mitimiti New Zealand  0.1
4-Mar-2021 22:12:64 Gasele Fiji  0.1
4-Mar-2021 22:12:64 Kavala Fiji  0.1
4-Mar-2021 23:50:65 Naikorokoro Fiji  0.1
4-Mar-2021 23:42:53 Sawaieke Fiji  0.1
4-Mar-2021 22:54:84 Dalice Fiji  0.1
4-Mar-2021 23:34:33 Herbertville New Zealand  0.1
4-Mar-2021 23:46:46 Port Jackson New Zealand  0.1
4-Mar-2021 21:52:21 Vandravandra Fiji  0.1
4-Mar-2021 22:40:08 Nabouwalu Fiji  0.1
4-Mar-2021 23:50:65 Colville New Zealand  0.1

See full locations list (RSS)


Initial conditions

Title: ""Kermadec Islands""

Fault parameters

  • Latitude: -29.747
  • Longitude: -177.224
  • Length: 125 km
  • Width: 35 km
  • Magnitude: 7.8 M

Okada parameters:

  • Slip: 3.2 m
  • Strike: 201 (geogr angle: north=0, south=180)
  • Dip: 38 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -189.224, -41.747, -165.224, -17.747
  • Instead of Step -> use Cell size:2 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.