An earthquake with a preliminary magnitude of 4.5 shook Anchorage and Southcentral Alaska on Sunday evening. The quake was centered about 21 miles west of the city under upper Cook Inlet, near the mouth of the Susitna River.
The Alaska Earthquake Center said the quake, at 9:19 p.m., occurred at a depth of about 40 miles.
There were no immediate reports of damage. It was widely felt in the city and in the Mat-Su area, according to social media accounts, though some people said they didn't feel anything.