M 4.8 in New Zealand on 21 Jan 2021 13:51 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: 4.8M
Depth: 31.53 Km
Lat/Lon: -45.1688 , 166.7644
Event Date: 21 Jan 2021 13:51 UTC
22 Jan 2021 02:51 Local
Exposed Population:
About 6000 people within 100km
Source: NEIC us7000d22u
Inserted at: 21 Jan 2021 14:09 UTC
INFORM Coping capacity of the alert score
2 (New Zealand)

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
us7000d22u Scaled population (vector) 2.97  
  C1 earthquake 1  
  C2 earthquake 0  
  Country Vulnerability -0.33  
  INFORM_normalised 0.63  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1354141 0 21 Jan 2021 13:51 4.8M, 31.53km N/A 6 thousand (in 100km) 00:17 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 , County of Southland (population 34,612) .

Radius Population
100 km 6400 people
75 km <1000 people
50 km <1000 people
20 km no people
10 km no people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Southland New Zealand 35000 people

Critical infrastructure

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

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Manapouri TEU 209 Civ. Paved No 5000 80 km

Ports

Name LOCODE Country Distance
Doubtful Sound NZDGO New Zealand 15 km
Secretary Island New Zealand 16 km
Cape Providence New Zealand 95 km

Dams

Reservoir Dam Name River Year Distance
Te Anau Te Anau Lake Control Upper Waiau 1975 78 km
Manapouri Manapouri Lake Control Waiau 1975 79 km

More information

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