Early in the evening of 15 January 2022, Tonga’s Hunga volcano erupted with the largest and most energetic explosion recorded in modern times. The eruption, which occurred at the same time as Cyclone ...

The NZ Volcanic Alert Level system is based on 6 levels and is intended to describe the current status of each active volcano. People who need volcano related information ranges from local residents, ...

Strong-motion accelerometers are located in major centres of population, near significant faults, or in different types of building structures. They are capable of measuring very strong shaking ...

New Zealand’s tectonic setting in the Pacific puts us at risk from many different tsunami sources, some may be generated and arrive at our nearest coasts in less than an hour. To improve tsunami ...

Waveform data from GeoNet's seismic, acoustic and tidal gauge instruments can be requested through the following service: ...

An interactive, multi-layered map displaying the peak strong motion data that GeoNet collected during the last hour. Select a site to view the PGA (g), PGV (cm/s) and MMI values. Sites are coloured to ...

The 1934 Horoeka (Pahiatua) earthquake shook the lower North Island on 5 March 1934 and was felt as far away as Auckland and Dunedin.

GeoNet collects information about the intensity of shaking that people experienced during an earthquake. There have been a few different varieties of reports in the history of collecting this data.

Structural arrays consist of multiple sensors within a building or structure. They provide data to help engineers understand how the structure responds to shaking or vibration. The GeoNet building ...