The earthquake, with a preliminary magnitude of 7.3, struck south of Sand Point, Alaska, a community of about 600 people.

A major earthquake with a preliminary magnitude of 7.3 initially triggered a tsunami warning for the southern Alaska Peninsula. It was later downgraded to an advisory.

ANCHORAGE, Alaska ( KTUU /Gray News) - A tsunami warning has been issued Wednesday for parts of Southcentral and Southwest Alaska due to a large earthquake along the Aleutian Chain. The quake was measured at a magnitude of 7.3 with an epicenter near Sand Point along the Aleutians, about 83 miles southeast of King Cove.