M 6.6 Earthquake for 71km E of Hualian, Taiwan editor 9 years ago 31 minutes ago · U.S. Geological Survey …. This alert has been updated. Posted 12 minutes ago An earthquake with magnitude 6.6 occurred near Su-ao, Taiwan at 01:42:58.40 UTC on Apr 20, 2015. (This event has been reviewed by a seismologist.) Share this:Print