A moderate earthquake, an aftershock of last week’s magnitude 7.8 quake off the Alaska Peninsula, occurred in the same region Monday, according to the Alaska Earthquake Center. The center said the July 27 quake at 11:34 a.m. had a preliminary magnitude of 5.5 and was located at a depth of about 18 miles.
A magnitude 7.8 earthquake July 21 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.
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