M 8 Earthquake and Tsunami (2.1 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: 8.0M
Depth: 10 Km
Event Date: 04 Mar 2021 19:28 UTC
04 Mar 2021 07:28 Local
Exposed Population: No people within 100km
Source: NTWC at00qpgm3n
Inserted at: 04 Mar 2021 20:58 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
NTWC 0 1.5 1.5
at00qpgm3n Scaled population (vector) 0 Max wave alert 2.14m  
  C1 earthquake 1 Max wave realtime 2.14m  
  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  2.1m in Raoul Island Fishing Rock, New Zealand. This height is estimated for 4-Mar-2021 19:46:07.

Alert Date (UTC) Name Country Wave height (m)
4-Mar-2021 19:46:07 Raoul Island Fishing Rock New Zealand  2.1
4-Mar-2021 19:46:07 Raoul Island Boat Cove New Zealand  1.5
4-Mar-2021 22:50:04 Loanatom Vanuatu  0.3
4-Mar-2021 22:50:04 Lenakel Vanuatu  0.3
4-Mar-2021 22:50:04 Loonelapeun Vanuatu  0.3
4-Mar-2021 22:50:04 Isangel Vanuatu  0.3
4-Mar-2021 22:50:04 Yerou Vanuatu  0.3
4-Mar-2021 23:00:18 Yawisaghuwi Vanuatu  0.2
4-Mar-2021 22:08:54 Soso Fiji  0.2
4-Mar-2021 23:22:55 Ohonua Tonga  0.2
4-Mar-2021 22:56:96 Fuaamotu Tonga  0.2
4-Mar-2021 22:50:04 Waihau Bay New Zealand  0.2
4-Mar-2021 21:58:67 Mburelevu Fiji  0.2
4-Mar-2021 23:14:34 Pea Tonga  0.1
4-Mar-2021 22:52:61 Houma Tonga  0.1
4-Mar-2021 22:42:83 Foui Tonga  0.1
4-Mar-2021 22:42:83 Nukunuku Tonga  0.1
4-Mar-2021 22:50:04 Cape Runaway New Zealand  0.1
4-Mar-2021 22:50:04 Whangaparaoa New Zealand  0.1
4-Mar-2021 22:50:04 Monothaki Fiji  0.1
4-Mar-2021 22:18:36 Mbatiri Fiji  0.1
4-Mar-2021 22:32:73 Anelghowhat Vanuatu  0.1
4-Mar-2021 23:20:76 Port Patrick Vanuatu  0.1
4-Mar-2021 22:44:25 Yeruareng Vanuatu  0.1
4-Mar-2021 22:44:25 Imareukak Vanuatu  0.1
4-Mar-2021 22:18:36 Cuvu Fiji  0.1
4-Mar-2021 22:16:12 Lomawal Fiji  0.1
4-Mar-2021 22:10:46 Matavuralevu Fiji  0.1
4-Mar-2021 22:58:38 Te Kaha New Zealand  0.1
4-Mar-2021 22:54:15 Namuka Fiji  0.1
4-Mar-2021 22:32:73 Nabouwalu Fiji  0.1
4-Mar-2021 22:32:73 Vabea Fiji  0.1
4-Mar-2021 23:12:17 Owonga New Zealand  0.1
4-Mar-2021 22:36:58 Waisisi Vanuatu  0.1
4-Mar-2021 22:54:15 Loounimhapeun Vanuatu  0.1
4-Mar-2021 23:30:67 Motutangi New Zealand  0.1
4-Mar-2021 23:08:75 Umpon Mompu Vanuatu  0.1
4-Mar-2021 21:46:88 Nasau Fiji  0.1
4-Mar-2021 22:38:15 Naikorokoro Fiji  0.1
4-Mar-2021 22:38:15 Dalice Fiji  0.1
4-Mar-2021 23:02:49 Waisa Fiji  0.1
4-Mar-2021 20:54:45 ETD Fiji Basin Station 55016  0.1
4-Mar-2021 23:04:06 Motairehe New Zealand  0.1
4-Mar-2021 21:42:95 Kaduvu Fiji  0.1
4-Mar-2021 22:30:48 Ireupuow Vanuatu  0.1
4-Mar-2021 22:52:61 Loounemeloupang Vanuatu  0.1
4-Mar-2021 23:08:75 Omaio New Zealand  0.1
4-Mar-2021 23:22:55 Houpoto New Zealand  0.1
4-Mar-2021 23:10:73 Port Fitzroy New Zealand  0.1
5-Mar-2021 00:04:75 Ongea Fiji  0.1
4-Mar-2021 22:50:04 Rangiputa New Zealand  0.1
4-Mar-2021 22:02:76 Suva Fiji  0.1
4-Mar-2021 22:02:76 Tamavua Fiji  0.1
4-Mar-2021 22:02:76 Lauthala Bay Fiji  0.1
4-Mar-2021 23:02:49 Happy Land Vanuatu  0.1
4-Mar-2021 21:14:15 Avatele Niue  0.1
4-Mar-2021 23:02:49 Talaulia Fiji  0.1
4-Mar-2021 23:02:49 Nalotu Fiji  0.1
4-Mar-2021 23:38:52 Port Jackson New Zealand  0.1
4-Mar-2021 22:04:55 Taunovo Fiji  0.1
4-Mar-2021 22:58:38 Dakuimbeqa Fiji  0.1
4-Mar-2021 22:42:83 Waisomo Fiji  0.1
4-Mar-2021 22:06:06 Momi Fiji  0.1
4-Mar-2021 22:34:09 Isino Vanuatu  0.1
4-Mar-2021 20:00:34 640NM Northeast of Auckland- New Zealand Station 54401  0.1
4-Mar-2021 23:52:19 Kolonga Tonga  0.1
4-Mar-2021 23:52:19 Niutoua Tonga  0.1
4-Mar-2021 22:44:25 Port Awanui New Zealand  0.1
5-Mar-2021 00:14:77 Torere New Zealand  0.1
4-Mar-2021 23:40:19 Hihifo Tonga  0.1
4-Mar-2021 23:22:55 Tryphena New Zealand  0.1
4-Mar-2021 23:22:55 Claris New Zealand  0.1
4-Mar-2021 23:22:55 Okupu New Zealand  0.1
4-Mar-2021 21:58:67 Laucala Fiji  0.1
4-Mar-2021 22:04:55 Suva_Viti_Levu_FJ Fiji Islands  0.1
4-Mar-2021 22:44:25 Vatukarasa Fiji  0.1
4-Mar-2021 22:08:54 Galoa Fiji  0.1
4-Mar-2021 22:14:96 Mboma Fiji  0.1
4-Mar-2021 22:14:96 Tavua Fiji  0.1
4-Mar-2021 23:24:23 Savusavu Fiji  0.1
4-Mar-2021 23:28:44 Mbangata Fiji  0.1
4-Mar-2021 23:50:84 Nayavutoka Fiji  0.1
4-Mar-2021 23:20:76 Isavai Vanuatu  0.1
4-Mar-2021 23:40:19 Vunikura Fiji  0.1
4-Mar-2021 23:54:38 Whangape New Zealand  0.1
4-Mar-2021 23:54:38 Pawarenga New Zealand  0.1
4-Mar-2021 23:58:87 Ahipara New Zealand  0.1
4-Mar-2021 20:42:15 400 NM Southeast of Tonga  0.1
4-Mar-2021 21:00:03 Niue Niue  0.1
4-Mar-2021 22:04:55 Bouwanga Fiji  0.1
4-Mar-2021 23:36:84 Levuka Fiji  0.1
4-Mar-2021 22:40:93 Sawaieke Fiji  0.1
4-Mar-2021 22:40:93 Vione Fiji  0.1
4-Mar-2021 22:50:04 Liku Fiji  0.1
4-Mar-2021 23:12:17 Thikombia Fiji  0.1
4-Mar-2021 22:14:96 Mbangasau Fiji  0.1
5-Mar-2021 00:18:17 Tuvutha Fiji  0.1
5-Mar-2021 00:24:15 Qeleni Fiji  0.1
5-Mar-2021 00:10:93 Puhau New Zealand  0.1
5-Mar-2021 00:10:93 Omapere New Zealand  0.1
5-Mar-2021 00:10:93 Opononi New Zealand  0.1
4-Mar-2021 20:58:95 Hakupu Niue  0.1
4-Mar-2021 21:14:15 Alofi Niue  0.1
5-Mar-2021 00:02:17 Falehau Tonga  0.1
4-Mar-2021 21:40:76 Andako Fiji  0.1
4-Mar-2021 21:58:67 Korolevu Fiji  0.1
4-Mar-2021 22:02:76 Yanutha Fiji  0.1
4-Mar-2021 23:50:84 Nakondu Fiji  0.1
4-Mar-2021 22:38:15 Ipota Vanuatu  0.1
5-Mar-2021 00:04:75 Nasau Fiji  0.1

See full locations list (RSS)


Initial conditions

Title: ""M 8, Kermadec Islands region""

Fault parameters

  • Latitude: -29.6
  • Longitude: -176
  • Length: 158 km
  • Width: 44 km
  • Magnitude: 8 M

Okada parameters:

  • Slip: 4 m
  • Strike: 195 (geogr angle: north=0, south=180)
  • Dip: 25 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -191, -44.6, -161, -14.6
  • Instead of Step -> use Cell size:2.5 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.