Overview
- The British Geological Survey logged a magnitude 0.4 event at 7:55am on Sunday, November 2, 5.6 miles (9km) southwest of Rhosneigr at a depth of 17km.
- The survey reported no impacts on land from the offshore tremor.
- Northwest Wales has recorded several small quakes in 2025, including a 0.2 near Amlwch in July, a 1.6 at Llwyndyrus in August, and a 0.7 at Llangyndir in September.
- Local records note at least six recent tremors in Powys, underscoring persistent low-level seismicity in the region.
- Large geomagnetic storms this week prompted renewed interest in research into a possible solar–seismic link, which studies suggest is tentative and not yet established.