Moderate Aftershock of M7.8 Quake off Alaska Confirmed

A moderate earthquake, an aftershock of last week’s magnitude 7.8 quake off the Alaska Peninsula, occurred in the same region Monday, the Alaska Earthquake Center confirmed.

The center said Monday’s quake had a preliminary magnitude of 5.5 and was located at a depth of about 18 miles. It was centered about 80 miles from King Cove, where it was lightly felt, the center said. The King Cove Department of Public Safety sent a notice to residents stating that continued aftershocks were expected.

A magnitude 7.8 earthquake last week was centered in waters 65 miles south-southeast of the tiny community of Perryville, at a depth of 17 miles, according to the U.S. Geological Survey. It generated tsunami warnings that were canceled after the earthquake created a wave of a less than a foot.

Related:

• Anchorage Tsunami Alerts Were Sent by Mistake, Officials Says
• Magnitude 7.8 Quake Hits Alaska Isles, Tsunami Threat Didn’t Materialize