Early Wednesday morning our time (late Tuesday night local time) a magnitude 7.8 earthquake occurred more than 100 km southeast of Perryville, Alaska, in the Alaskan Peninsula.
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Tuesday a 7.7 magnitude earthquake occurred between Jamaica and Cuba.
The U.S. Geological Survey said the first and more powerful quake was centered about 7 miles (12 kilometers) north of Anchorage, Alaska's largest city.