Shallow M6.6 earthquake hits Yilan, Taiwan

A shallow M6.6 earthquake was recorded at 15:05 UTC on December 27, 2025, approximately 31 km (19 miles) east-southeast of Yilan, Taiwan. The seismic event occurred at a depth of 67.5 km (41.9 miles), as reported by the USGS.

The coordinates of the epicenter were 24.7°N, 122.0°E, placing the earthquake near the northeastern coast of Taiwan, close to the urban area of Yilan. The region is characterized by significant population density and proximity to the Pacific coastline, making it a notable area for seismic activity.

Given its location near Yilan and the coast, the region hosts essential transport infrastructure, including highways, railways, and the nearby ports serving the eastern part of Taiwan. Power transmission lines and energy distribution networks are also common in this area due to its urban and coastal nature.

There is no tsunami threat associated with this earthquake, based on its location and available data.

The maximum estimated intensity reached VI, and 7 felt reports were received. The significance index is 674 (on a scale that runs through 1 000), based on magnitude, felt reports, and estimated impact.

Taiwan is situated along the boundary between the Philippine Sea Plate and the Eurasian Plate, making it a region of frequent seismic activity. The island experiences regular earthquakes due to complex plate interactions and subduction processes in the area.

This information was last updated at 15:25 UTC on December 27, 2025.