According to the official determination of the China Earthquake Network, a 5.0-magnitude earthquake occurred in the sea area of Hualien County, Taiwan at 10:40 on April 21, with an epicenter depth of 20 kilometers and an epicenter at 23.49 degrees north latitude and 121.60 degrees east longitude, about 9 kilometers away from Taiwan Island.
Basic background
Surrounding counties: The epicenter is 15 kilometers away from Fengbin Township, 20 kilometers away from Ruisui Township, 24 kilometers away from Guangfu Township, 26 kilometers away from Changbin Township, 28 kilometers away from Yuli Town, 56 kilometers away from Hualien County, and 172 kilometers away from Taipei City.
Epicenter terrain: The average altitude within 5 km of the epicenter is about -1027 meters.
Historical earthquakes: According to the China Earthquake Network Quick Report Directory, a total of 302 earthquakes of magnitude 4 or higher have occurred within 200 kilometers of the epicenter in the past five years, and the largest earthquake is a 7.3-magnitude earthquake that occurred in the sea area of Hualien County, Taiwan on April 3, 2024 (38 kilometers away from the epicenter), and the distribution of the top 50 historical earthquakes by magnitude is shown in the figure.
Source: China Earthquake Network