China Earthquake Administration: The magnitude 7.3 earthquake off the coast of Hualien County, Taiwan was a thrust rupture located in the northern section of the East Longitudinal Valley Fault. Since 1970, 19 earthquakes of magnitude 7 or above have occurred within 300 kilometers of the epicenter.

This earthquake broke the 17-year calm of earthquakes above magnitude 7 since the 2006 magnitude. 7.2 earthquake in Pingtung, Taiwan. Seismological experts said that from the perspective of long-term strain release, this 7. 3-magnitude earthquake was a normal ups and downs of strong seismic activity in Taiwan.