China News Service, October 20. According to the official Weibo news of the National Seismological Network, China Earthquake Networks officially determined that it was in the waters south of Alaska (54.74 degrees north latitude, 159.75 degrees west longitude) at 4:54 on October 20. A magnitude 7.5 earthquake occurred with a focal depth of 40 kilometers.

Image source: Official Weibo of National Seismological Network