The British Geological Survey recorded a minor earthquake near Bettws in Newport at the weekend. The tremor took place at 2.51pm on Saturday.
It was measured at 1.3 on the local magnitude scale, and occurred at a depth of around six kilometres, according to the survey, which monitors seismic activity across the UK.
Seismic scale details
The survey says that earthquakes below 2.0 on the seismic magnitude scale may not be felt at all.
Describing its role on its website, it says: "The British Geological Survey is a world-leading geological survey and global geoscience organisation, focused on public-good science for government and research to understand earth and environmental processes.
Survey's mission
We are the UK’s premier provider of objective and authoritative geoscientific data, information and knowledge to help society to use its natural resources responsibly, manage environmental change and be resilient to environmental hazards."
