Buildings shook in Taipei early on Wednesday morning as two earthquakes in quick succession, the strongest with a magnitude of 6.6, struck southeastern Taiwan, but there were no immediate reports of damage.
The deepest had a depth of 30.6 km (19 miles) and the other one was 19.3 km deep. They could both be felt across Taiwan, with the epicentres in Hualien county - one just offshore - and close to the city of Taitung, the weather bureau said.
Hualien and Taitung are both mountainous, relatively sparsely populated areas.
