Earthquake
Earthquake

Find the latest quakes, search the full catalogue, and learn about our monitoring.
- Earthquakes
- Search
- Drums
- Forecasts
- Historical events
- Slow slip
- Swarms
- Statistics
- Strong motion
- FAQ
- Gallery
- Glossary
- How
- Intensity
- Videos
Volcano
Volcano

View current volcanic activity, alert levels, and updates, and learn how GeoNet monitors New Zealand's active volcanoes.
- FAQ
- Gallery
- Glossary
- How
- Videos
Landslide
Landslide

Find information on recent landslides, understand landslide hazards, and learn how landslides are monitored and assessed.
- FAQ
- Glossary
- How
- Videos
Tsunami
Tsunami

Learn about tsunami hazards, warning signs, and alerts, and how tsunamis are monitored in New Zealand and the Pacific region.
- FAQ
- Glossary
- How
- Videos
Data Discovery
Data discovery

Explore GeoNet's data visualisations, maps, and catalogues.
Data Types
Data types

Get an overview of the different kinds of data available on GeoNet and what each one shows.
Data Access
Data access

Find ways to view, download, and use GeoNet data and services.

Strong Motion Data Map

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 reflect the level of shaking based on MMI.

Strong Motion Data Map

Rapid Strong Motion Data

The maximum horizontal PGA or PGV is taken as the maximum of the two horizontal components.
A symbol might be absent for the following reasons: 1) no data was received from the site in the last hour, or 2) if the site has been blacklisted due to unacceptable levels of noise.
These values are calculated in near real-time and can be affected by shaking from non-earthquake sources, such as noise. Please read our disclaimer.
Changes in metadata can also create anomalous readings. We are working on our change control procedures to reduce the likelihood of this occurring.
The continuous monitoring of PGA and PGV is based on work by Kanamori et al. (1999)
The calculations of MMI are based on the NZ equation of Moratalla et, al. (2020)
A suite of strong motion data products are available for earthquake events. These are accessible from the Strong Motion Tool.