M 4.7 in New Zealand on 22 Apr 2015 22:42 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: 4.7M
Depth: 22.38 Km
Lat/Lon: -41.6743 , 174.2711
Event Date: 22 Apr 2015 22:42 UTC
23 Apr 2015 10:42 Local
Exposed Population:
475351 people within 100km
Source: NEIC
Inserted at: 22 Apr 2015 23:03 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake GDACS score
NEIC 0 0
Scaled population (vector) n.a  
  C1 earthquake n.a  
  C2 earthquake n.a  
  Country Vulnerability n.a  
  INFORM_normalised n.a  
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
1077294 0 22 Apr 2015 22:42 4.7M, 22.38km N/A 480 thousand (in 100km) 00:20 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 Nelson-Marlborough. The nearest places are Wellington, and Blind River.

Radius Population
100 km 480000 people
75 km 280000 people
50 km 40000 people
20 km 3100 people
10 km <1000 people
5 km no people
2 km no people

Affected Provinces

Region Province Country Population
Nelson-Marlborough New Zealand -

Affected populated places

Name Region Province Country City class Population Distance
Blind River Marlborough New Zealand Village - 12 km
Wellington Wellington New Zealand Capital 180000 people 58 km

see full list

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
Woodbourne BHE 33 Civ. Paved Yes 4600 38 km
Picton Koromiko PCN unknown 41 km

Ports

Name LOCODE Country Distance
Cape Campbell New Zealand 7 km
Blenheim NZBHE New Zealand 16 km

Dams

Reservoir Dam Name River Year Distance
Taylor Taylor n/a 30 km

More information

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