M 5.6 in New Zealand on 21 Oct 2021 21:58 UTC

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: 5.6M
Depth: 223.09 Km
Lat/Lon: -39.0609 , 174.9544
Event Date: 21 Oct 2021 21:58 UTC
22 Oct 2021 10:58 Local
Exposed Population: 190 thousand in 100km
Source: NEIC us6000fwke
Inserted at: 21 Oct 2021 22:17 UTC
INFORM Coping capacity of the alert score: 2 (New Zealand)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake
(Shakemap)		 GDACS score
NEIC 0 0
us6000fwke Scaled population (raster) 0  
  C1 shakemap -0.59  
  C2 shakemap 0.53  
  Country Vulnerability 0  
  INFORM_normalised 0.63  
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1403756 0 21 Oct 2021 21:58 5.6M, 223.09km 3.94 N/A (in MMI>=VII) 00:18 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.

Exposed population

The earthquake happened in New Zealand ,of Wanganui-Manawatu (population 56,658) . The alertlevel for this event is GREEN

Intensity Population
no people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 1403756 -39.061/174.954 5.6 223.1 3.693 21 Oct 2021 22:18 00:20 (new episode)
2 0 1403756 -39.061/174.954 5.6 223.1 3.937 21 Oct 2021 23:20 01:21 (upd of #1)
3 0 1403756 -39.061/174.954 5.6 223.1 3.937 22 Oct 2021 00:02 02:03 (upd of #2)
4 0 1403756 -39.061/174.954 5.6 223.1 3.936 22 Oct 2021 22:19 1d 00:21 (upd of #3)
5 0 1403756 -39.061/174.941 5.6 227.5 3.937 24 Oct 2021 01:28 2d 03:29 (upd of #4)
6 0 1403756 -39.015/174.96 5.6 226.0 3.939 24 Oct 2021 02:07 2d 04:09 (upd of #5)

Affected Provinces

Intensity Region Province Country Population
Wanganui-Manawatu New Zealand 57000 people
Taranaki New Zealand 110000 people
Waikato New Zealand 27000 people
Bay of Plenty New Zealand <1000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Tahora Manawatu Wanganui New Zealand Village - 14 km
Kirikau Manawatu Wanganui New Zealand Village - 16 km
Whangamomona Manawatu Wanganui New Zealand Village - 21 km
Ohura Manawatu Wanganui New Zealand Village <1000 people 25 km
Waitaanga Manawatu Wanganui New Zealand Village - 27 km
Taumarunui Manawatu Wanganui New Zealand Village 4900 people 34 km
Matiere Manawatu Wanganui New Zealand Village - 36 km
Matau Taranaki New Zealand Village - 36 km
Raurimu Manawatu Wanganui New Zealand Village - 38 km
Uruti Taranaki New Zealand Village - 39 km
Kakahi Manawatu Wanganui New Zealand Village - 40 km
National Park Manawatu Wanganui New Zealand Village - 40 km
Tongaporutu Taranaki New Zealand Village - 41 km
Strathmore Taranaki New Zealand Village - 42 km
Pukearuhe Taranaki New Zealand Village - 43 km
Pokaka Manawatu Wanganui New Zealand Village - 46 km
Ongarue Manawatu Wanganui New Zealand Village - 48 km
Raetihi Manawatu Wanganui New Zealand Village 1000 people 49 km
Oruaiwi Manawatu Wanganui New Zealand Village - 49 km
Urenui Taranaki New Zealand Village <1000 people 50 km
Mokau Waikato New Zealand Village - 50 km
Tarata Taranaki New Zealand Village - 52 km
Awakino Waikato New Zealand Village - 54 km
Mahoenui Waikato New Zealand Village - 55 km
Ohakune Manawatu Wanganui New Zealand Village 1300 people 55 km
Makakaho Taranaki New Zealand Village - 55 km
Mokauiti Waikato New Zealand Village - 55 km
Aria Waikato New Zealand Village - 56 km
Te Popo Taranaki New Zealand Village - 56 km
Toko Taranaki New Zealand Village - 58 km
Parapara Manawatu Wanganui New Zealand Village - 58 km
Moeawatea Taranaki New Zealand Village - 58 km
Tikorangi Taranaki New Zealand Village - 59 km
Mangamingi Taranaki New Zealand Village - 59 km
Tongariro Waikato New Zealand Village - 60 km
Waitara Taranaki New Zealand Village 6200 people 63 km
Lepperton Taranaki New Zealand Village - 65 km
Tariki Taranaki New Zealand Village - 65 km
Karioi Manawatu Wanganui New Zealand Village - 65 km
Midhirst Taranaki New Zealand Village - 65 km
Inglewood Taranaki New Zealand Village 2900 people 66 km
Stratford Taranaki New Zealand Village 5200 people 66 km
Piopio Waikato New Zealand Village <1000 people 66 km
Omata Valley Taranaki New Zealand Village - 69 km
Benneydale Waikato New Zealand Village - 70 km
Eltham Taranaki New Zealand Village 2200 people 70 km
Whareorino Waikato New Zealand Village - 70 km
Tokaanu Waikato New Zealand Village - 71 km
Cardiff Taranaki New Zealand Village - 71 km
Egmont Village Taranaki New Zealand Village <1000 people 71 km
Ararata Taranaki New Zealand Village - 71 km
Mangaotaki Waikato New Zealand Village - 72 km
Meremere Taranaki New Zealand Village <1000 people 73 km
Kakatahi Manawatu Wanganui New Zealand Village - 73 km
Turangi Waikato New Zealand Village 3400 people 75 km
Hurleyville Taranaki New Zealand Village - 76 km
Omahina Taranaki New Zealand Village - 76 km
New Plymouth Taranaki New Zealand Village 48000 people 76 km
Rangiwaea Manawatu Wanganui New Zealand Village - 76 km
Waiouru Manawatu Wanganui New Zealand Village 1300 people 77 km
Moeatoa Waikato New Zealand Village - 79 km
Pakeho Waikato New Zealand Village - 80 km
Ngapaenga Waikato New Zealand Village - 80 km
Montuoapa Waikato New Zealand Village - 81 km
Kaponga Taranaki New Zealand Village - 81 km
Tihoi Waikato New Zealand Village - 81 km
Otoko Manawatu Wanganui New Zealand Village - 82 km
Rowan Taranaki New Zealand Village - 82 km
Manutahi Taranaki New Zealand Village - 82 km
Barryville Manawatu Wanganui New Zealand Village - 82 km
Te Kuiti Waikato New Zealand Village 4500 people 83 km
Hawera Taranaki New Zealand City 11000 people 83 km
Waverley Taranaki New Zealand Village <1000 people 83 km
Okaiawa Taranaki New Zealand Village - 83 km
Kakaramea Taranaki New Zealand Village - 84 km
Waitotara Taranaki New Zealand Village - 85 km
Papanui Manawatu Wanganui New Zealand Village - 85 km
Kapuni Taranaki New Zealand Village - 85 km
Hihitahi Manawatu Wanganui New Zealand Village - 86 km
Kai Iwi Manawatu Wanganui New Zealand Village - 87 km
Patea Taranaki New Zealand Village 1300 people 88 km
Manaia Taranaki New Zealand Village <1000 people 90 km
Te Anga Waikato New Zealand Village - 90 km
Mataroa Manawatu Wanganui New Zealand Village - 93 km
Te Kiri Taranaki New Zealand Village - 93 km
Okato Taranaki New Zealand Village <1000 people 94 km
Otakeho Taranaki New Zealand Village - 95 km
Paewhenua Waikato New Zealand Village - 95 km
Wanganui Manawatu Wanganui New Zealand City 40000 people 97 km
Puniho Taranaki New Zealand Village - 99 km
Otorohanga Waikato New Zealand Village 2600 people 100 km
Pihama Taranaki New Zealand Village - 101 km
Pungarehu Taranaki New Zealand Village - 102 km
Fordell Manawatu Wanganui New Zealand Village - 102 km
Honikiwi Waikato New Zealand Village - 102 km
Rahotu Taranaki New Zealand Village <1000 people 104 km
Opunake Taranaki New Zealand Village 1500 people 104 km
Oaonui Taranaki New Zealand Village - 105 km
Ngahape Waikato New Zealand Village - 106 km
Tiheroa Waikato New Zealand Village - 108 km

see full list


Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Taumarunui 198 Civ. Unpaved No 4100 35 km
Stratford 288 Civ. Unpaved No 3100 62 km
New Plymouth NPL 30 Civ. Paved Yes 4200 68 km
Waiouru 823 Mil. Paved No 3900 74 km
Hawera 114 Priv. Unpaved No 3100 81 km
Wanganui WAG 8 Civ. Paved Yes 4500 100 km

Ports

Intensity Name LOCODE Country Distance
Waitara New Zealand 60 km
New Plymouth NZNPL New Zealand 80 km
Port Taranaki / New Plymouth NZNPL New Zealand 80 km
Patea New Zealand 89 km
Wanganui NZWAG New Zealand 99 km

Dams

Intensity Reservoir Dam Name River Year Distance
Ratapiko Mako 1926 56 km
Otamangakau Otamanakau Stream 1971 58 km
Patea Patea 1984 63 km
Rotoaira Poutu Poutu 1972 69 km
Kuratau Kuratau 1962 70 km
Mangamahoe Mangamahoe 1931 72 km
Rangipo Tongariro 1980 73 km
Moawhango Moawhango 1975 79 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.