Earthquake centered on west side of Cook Inlet shakes Southcentral Alaska

An earthquake with a preliminary magnitude of 5.1 centered deep beneath Cook Inlet shook Southcentral Alaska, including Anchorage, on Thursday night.

The quake, at 8:18 p.m., was centered on the west side of the inlet at a depth of 64 miles, according to the USGS and Alaska Earthquake Center. The epicenter was 41 miles west of Kenai.

The magnitude was initially reported at 4.8 and was subsequently adjusted to 5.1.

It was felt on the Kenai Peninsula and in Anchorage. There were no immediate reports of damage and there were no tsunami alerts.