A 5.1-magnitude earthquake has struck near Kodiak island, but there have been no reports of injury or damage.

The U.S. Geological Survey says the quake occurred at 6:12 p.m. Saturday and was centered in the sea about 70 miles south of Old Harbor.

The quake struck just one week after another 5.1 temblor, 50 miles east of Amchitka Island.

Quakes reaching a magnitude of 5.0 are capable of causing considerable damage.