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|Realtime - Fast

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 19:48 UTC

This is a pre-calculated grid scenario. The exact calculation for this event is available here

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NTWC n.a 1.5 1.5
at00qpgm3n Scaled population (vector) n.a Max wave alert 2.14m  
  C1 earthquake n.a Max wave realtime 2.14m  
  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
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 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  2.0
4-Mar-2021 19:46:07 Raoul Island Boat Cove New Zealand  1.4
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  0.0
4-Mar-2021 21:14:15 Alofi Niue  0.0
5-Mar-2021 00:02:17 Falehau Tonga  0.0
4-Mar-2021 21:40:76 Andako Fiji  0.0
4-Mar-2021 21:58:67 Korolevu Fiji  0.0
4-Mar-2021 22:02:76 Yanutha Fiji  0.0
4-Mar-2021 23:50:84 Nakondu Fiji  0.0
4-Mar-2021 22:38:15 Ipota Vanuatu  0.0
5-Mar-2021 00:04:75 Nasau Fiji  0.0

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.