WASHINGTON, Oct 13 (Reuters) - A magnitude 6.3 quake struck off Alaska's Aleutian Islands on Tuesday, the U.S. Geological Survey reported.

The quake, shallow at a depth of 8.5 miles (14 km) under the seabed, was centered 75 miles (120 km) southeast of Nikolski.

The Pacific Tsunami Center said the quake did not trigger a tsunami.

The area is prone to quakes but 6.3 is greater than most temblors affecting the Aleutians. (Reporting by Sandra Maler, Editing by David Storey)

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