A magnitude 6.8 earthquake occurred at 2:44 pm local time in eastern Taiwan. In the East Hwaren region, a three-story building with a convenience store on the first floor collapsed, the ceiling of a train station platform collapsed, six trains were derailed, and two bridges and part of an elementary school building collapsed.
The US Geological Survey (USGS) initially reported the magnitude of the earthquake as 7.2, but later revised it to 6.9. Due to the earthquake, the US Tsunami Warning Center (TWC) issued a tsunami warning for Taiwan, and the Japan Meteorological Agency issued a tsunami advisory for the Miyakojima and Yaeyama regions of Okinawa Prefecture.
Also, at 5:39 pm that day, a magnitude 5.8 earthquake occurred 80 km south-southwest of Hualien, eastern Taiwan.
The number of casualties caused by the earthquake is not known accurately. Chen Guo-chang, head of the Meteorological Bureau’s Earthquake Prediction Center, said the earthquake with a magnitude of 6.8 was the main earthquake in the recent succession, and the previous day’s earthquake was a precursor to an earthquake that preceded the main earthquake. He explained that there were 73 precursor earthquakes before the main earthquake occurred.
There were also earthquakes in Japan that day. At 5:10 pm, a magnitude 6.1 earthquake occurred 178 km west of Okinawa, Okinawa Prefecture, Japan, followed by a magnitude 5.5 earthquake 179 km west of Okinawa at 7:05 pm.
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