The U.S. Geological Survey recorded an earthquake with a preliminary magnitude of 7.8 that occurred 98 km SSE of Perryville, Alaska at 4:12 p.m. (ChST), with a depth of 10.0 km.
As advised by the Pacific Tsunami Warning Center, there is no tsunami threat at this time to Guam or the Marianas.
According to the USGS, the quake had a depth of six miles and was centered 60 miles south-southeast of Perryville, Alaska.
The quake prompted a tsunami warning to be issued.
It was felt as far away as Anchorage, which is 500 miles away.