M 8 Earthquake and Tsunami (1.3 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: PTWC pt21063003
Inserted at: 04 Mar 2021 19:43 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
PTWC 0 1.1 1.1
pt21063003 Scaled population (vector) 0 Max wave alert 1.28m  
  C1 earthquake 1 Max wave realtime 1.28m  
  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  1.3m in Raoul Island Boat Cove, New Zealand. This height is estimated for 4-Mar-2021 19:46:56.

Alert Date (UTC) Name Country Wave height (m)
4-Mar-2021 19:46:56 Raoul Island Boat Cove New Zealand  1.3
4-Mar-2021 19:46:56 Raoul Island Fishing Rock New Zealand  1.3
4-Mar-2021 22:40:44 Anelghowhat Vanuatu  0.4
4-Mar-2021 22:40:44 Umetch Vanuatu  0.4
4-Mar-2021 22:50:17 Lenakel Vanuatu  0.3
4-Mar-2021 22:50:17 Isangel Vanuatu  0.3
4-Mar-2021 22:50:17 Yerou Vanuatu  0.3
4-Mar-2021 22:10:25 Soso Fiji  0.3
4-Mar-2021 22:10:25 Kaduvu Fiji  0.3
4-Mar-2021 22:22:51 Namara Fiji  0.3
4-Mar-2021 22:48:22 Cape Runaway New Zealand  0.2
4-Mar-2021 22:48:22 Whangaparaoa New Zealand  0.2
4-Mar-2021 23:06:93 Umpon Mompu Vanuatu  0.2
4-Mar-2021 23:06:93 Yawisaghuwi Vanuatu  0.2
4-Mar-2021 22:52:55 Houma Tonga  0.2
4-Mar-2021 22:52:55 Pea Tonga  0.2
4-Mar-2021 23:08:06 Namuka Fiji  0.2
4-Mar-2021 22:44:52 Isino Vanuatu  0.2
4-Mar-2021 22:44:52 Yeruareng Vanuatu  0.2
4-Mar-2021 23:38:72 Raukokore New Zealand  0.2
5-Mar-2021 00:02:98 Ongea Fiji  0.2
4-Mar-2021 21:58:24 Nasau Fiji  0.2
4-Mar-2021 21:58:24 Talaulia Fiji  0.2
4-Mar-2021 22:22:51 Keteira Fiji  0.2
4-Mar-2021 22:36:42 Nabouwalu Fiji  0.2
4-Mar-2021 22:36:42 Vabea Fiji  0.2
4-Mar-2021 23:36:41 Savusavu Fiji  0.2
4-Mar-2021 23:36:41 Naindi Fiji  0.2
4-Mar-2021 22:50:17 Loanatom Vanuatu  0.2
4-Mar-2021 22:54:97 Loounemeloupang Vanuatu  0.2
4-Mar-2021 23:50:68 Lownepina Vanuatu  0.2
4-Mar-2021 20:00:75 640NM Northeast of Auckland- New Zealand Station 54401  0.1
4-Mar-2021 22:52:55 Niutoua Tonga  0.1
4-Mar-2021 21:44:27 Nukuvou Fiji  0.1
4-Mar-2021 23:26:54 Ohonua Tonga  0.1
4-Mar-2021 22:48:22 Fuaamotu Tonga  0.1
4-Mar-2021 23:02:02 Monothaki Fiji  0.1
4-Mar-2021 22:44:52 Vatukarasa Fiji  0.1
4-Mar-2021 22:38:57 Owonga New Zealand  0.1
4-Mar-2021 22:38:57 Chatham Island New Zealand  0.1
4-Mar-2021 22:48:22 Ireupuow Vanuatu  0.1
4-Mar-2021 23:00:22 Te Kaha New Zealand  0.1
4-Mar-2021 22:40:44 Whareponga New Zealand  0.1
4-Mar-2021 22:04:46 Bouwanga Fiji  0.1
4-Mar-2021 22:04:46 Taunovo Fiji  0.1
4-Mar-2021 22:10:25 Cuvu Fiji  0.1
4-Mar-2021 22:18:11 Lomawal Fiji  0.1
4-Mar-2021 22:18:11 Mbatiri Fiji  0.1
4-Mar-2021 23:22:49 Motutangi New Zealand  0.1
4-Mar-2021 21:42:07 Mburelevu Fiji  0.1
4-Mar-2021 21:56:77 Vandravandra Fiji  0.1
4-Mar-2021 22:20:89 Momi Fiji  0.1
4-Mar-2021 23:06:93 Happy Land Vanuatu  0.1
4-Mar-2021 20:54:95 ETD Fiji Basin Station 55016  0.1
5-Mar-2021 00:22:52 Tryphena New Zealand  0.1
5-Mar-2021 00:40:87 Port Fitzroy New Zealand  0.1
4-Mar-2021 21:48:82 Merita New Zealand  0.1
4-Mar-2021 23:34:73 Gasele Fiji  0.1
4-Mar-2021 22:54:97 Sigatoka Fiji  0.1
4-Mar-2021 22:38:57 Dakuimbeqa Fiji  0.1
4-Mar-2021 22:50:17 Rave-rave Fiji  0.1
4-Mar-2021 23:48:22 Whangape New Zealand  0.1
4-Mar-2021 23:48:22 Pawarenga New Zealand  0.1
4-Mar-2021 23:16:47 Nabouwalu Fiji  0.1
4-Mar-2021 22:52:55 Foui Tonga  0.1
4-Mar-2021 21:00:99 Hakupu Niue  0.1
4-Mar-2021 23:06:93 Omaio New Zealand  0.1
4-Mar-2021 23:44:91 Claris New Zealand  0.1
4-Mar-2021 23:44:91 Okupu New Zealand  0.1
4-Mar-2021 22:00:75 Tamavua Fiji  0.1
4-Mar-2021 22:00:75 Lauthala Bay Fiji  0.1
4-Mar-2021 22:00:75 Suva_Viti_Levu_FJ Fiji Islands  0.1
4-Mar-2021 22:36:42 Yanutha Fiji  0.1
4-Mar-2021 22:06:64 Navuti Fiji  0.1
4-Mar-2021 22:10:25 Tavua Fiji  0.1
4-Mar-2021 21:00:99 Alofi Niue  0.1
4-Mar-2021 21:00:99 Niue Niue  0.1
4-Mar-2021 22:36:42 Matawhero New Zealand  0.1
4-Mar-2021 22:36:42 Gisborne New Zealand  0.1
4-Mar-2021 22:36:42 Gisborne New Zealand  0.1
4-Mar-2021 22:46:76 Laucala Fiji  0.1
4-Mar-2021 22:00:75 Suva Fiji  0.1
4-Mar-2021 22:00:75 Naitionitoni Fiji  0.1
4-Mar-2021 22:40:44 Korolevu Fiji  0.1
4-Mar-2021 22:36:42 Sawaieke Fiji  0.1
4-Mar-2021 23:46:62 Liku Fiji  0.1
4-Mar-2021 22:06:64 Waisomo Fiji  0.1
4-Mar-2021 23:44:91 Thikombia Fiji  0.1
4-Mar-2021 22:54:97 Solevu Fiji  0.1
4-Mar-2021 23:42:46 Naweni Fiji  0.1
4-Mar-2021 23:32:42 Thavanga Fiji  0.1
4-Mar-2021 23:12:37 Ahipara New Zealand  0.1
4-Mar-2021 23:14:77 Potnarvin Vanuatu  0.1
4-Mar-2021 20:58:04 Avatele Niue  0.1
4-Mar-2021 23:40:99 Falehau Tonga  0.1
5-Mar-2021 00:28:25 Taurikura New Zealand  0.1
4-Mar-2021 22:44:52 Nalotu Fiji  0.1
5-Mar-2021 00:24:91 Port Jackson New Zealand  0.1
4-Mar-2021 23:38:72 Vione Fiji  0.1
4-Mar-2021 22:36:42 Lalati Fiji  0.1
4-Mar-2021 22:04:46 Dalice Fiji  0.1
4-Mar-2021 23:36:41 Tuvutha Fiji  0.1
5-Mar-2021 00:00:24 Vangai Fiji  0.1
4-Mar-2021 22:46:76 Waiyevo Fiji  0.1
4-Mar-2021 22:54:97 Vunikura Fiji  0.1
4-Mar-2021 23:54:74 Mitimiti New Zealand  0.1
4-Mar-2021 20:42:44 400 NM Southeast of Tonga  0.1
4-Mar-2021 21:40:04 Andako Fiji  0.1
4-Mar-2021 22:00:75 Korovisilou Fiji  0.1
4-Mar-2021 22:10:25 Makongai Fiji  0.1
4-Mar-2021 22:26:37 Kawau Island New Zealand  0.1
4-Mar-2021 22:18:11 Mohoun'gha Vanuatu  0.1
4-Mar-2021 22:18:11 Ipao Vanuatu  0.1
5-Mar-2021 00:08:26 Omapere New Zealand  0.1
5-Mar-2021 00:34:27 Puhau New Zealand  0.1
5-Mar-2021 00:34:27 Opononi New Zealand  0.1
4-Mar-2021 22:50:17 Rampunalvat Vanuatu  0.1

See full locations list (RSS)


Initial conditions

Title: ""Kermadec Islands region""

Fault parameters

  • Latitude: -29.623
  • Longitude: -176.024
  • Length: 158 km
  • Width: 44 km
  • Magnitude: 8 M

Okada parameters:

  • Slip: 4 m
  • Strike: 201 (geogr angle: north=0, south=180)
  • Dip: 25 degree
  • Rake: 90 degree
  • Depth: 10 km

Calculation parameters

  • Calculation space (lon/lat): -191.024, -44.623, -161.024, -14.623
  • Instead of Step -> use Cell size:2.5 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.