The U.S. Geological Survey is reporting no damage from a strong earthquake that rocked Alaska's Aleutian Islands.

The quake struck at 8:49 p.m. Sunday and was centered 45 miles southwest of the village of Nikolski (nih-KOHL'-skee) at a depth of 16 miles.

The USGS says the quake had a preliminary magnitude of 6.9.

Nikolski and its 15 permanent residents are on Umnak Island, one of the Fox Islands, which are just less than 1,000 miles west of Anchorage.

At least four quakes of magnitude 5.0 to 5.7 followed in the Fox Islands.