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.

There is no tsunami threat to other parts of the U.S. or Canadian Pacific coasts, including California, Oregon, Washington, and British Columbia.

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