The quake about 91 kilometers southeast of Sand Lake, Alaska was recorded at 1:54 p.m. local time. The quake was at a depth of 25 miles.
The tsunami warning was later downgraded to an advisory.
Sand Lake is about 923 miles from Anchorage and 1,582 miles from Juneau. It is about 2,450 miles from Portland by land.
The National Tsunami Warning Center said, “For other US and Canadian Pacific coasts in North America, there is no tsunami threat.”
No reports of damage have been immediately recorded.
KOIN 6 News will have more information as it develops.