7.3 magnitude earthquake rattles Alaskan island

The warning was later downgraded to an advisory, according to the agency.

Sand Point is located on northwestern Popof Island, off the Alaska Peninsula. It's approximately 600 miles southwest of Anchorage, Alaska.

The earthquake struck 54 miles south of Sand Point, according to the U.S. Geological Survey (USGS).

The tsunami advisory is in effect from South Alaska and the Alaska Peninsula to Kennedy Entrance and Unimak Pass, Alaska, on the Pacific Coast.

In addition to Sand Point, Alaskan cities Cold Bay and Kodiak are included in the advisory area.

Kodiak Police told ABC News sirens sounded in the city, which indicates to move to high ground. Any impacts in the area would be expected to arrive at approximately 2:40 p.m