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.

A lightly populated stretch of Alaska ’s southern coast was under a tsunami warning Wednesday after a strong earthquake was felt throughout the region, and officials in the Pacific Northwest were evaluating whether there was any threat to coastlines there. Early measurements put the quake’s magnitude at 7.3.

The National Weather Service has lifted a tsunami advisory for communities on the Alaska Peninsula and Kodiak Island after a magnitude 7.3 earthquake struck about 55 miles south of Sand Point. The advisory was lifted at 2:43 p.m. Wednesday.