Strong earthquake strikes Indonesia's Sumatra island

A powerful 6.1-magnitude earthquake rocked Indonesia’s Sumatra island on Tuesday. According to the US Geological Survey (USGS), the tremor occurred 65 kilometres southeast of Sinabang. Indonesia is part of the Pacific “Ring of Fire,” a region known for frequent earthquakes and volcanic eruptions, making it particularly vulnerable to seismic events. Indonesia’s Sumatra region lies along a major tectonic collision zone that stretches more than 8,000 kilometres, going from Papua in the east to the Himalayan front in the west. The Sumatra-Andaman section of this zone forms a subduction megathrust along the Sunda-Java trench, where the Indo-Australia and Sunda plates converge. This movement fuels the region’s intense seismic and volcanic activity.Earlier, in November 2025, the Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG) reported a strong 6.3-magnitude quake near Aceh province, striking at a depth of 10 kilometres. The tremor was felt widely, but authorities confirmed there is no tsunami threat, Reuters reported.This is a developing copy.