NIKOLSKI, ALASKA (BNO NEWS) -- A strong earthquake struck southwest of one of the Fox Islands in Alaska on late Saturday evening, seismologists said, but there were no immediate reports of damage or casualties.

The 6.7-magnitude earthquake at 9.56 p.m. local time (0556 GMT Sunday) struck about 25 miles (45 kilometers) west of Nikolski, a census-designated place on Umnak Island. It struck approximately 21.7 miles (35 kilometers) deep, making it a shallow earthquake, according to the United States Geological Survey (USGS).

Umnak Island has only a few residents. In the 2000 census, the island had a population of 39.

The USGS estimated that approximately 100 people may have felt light shaking as a result of the earthquake. The center said damage was unlikely.

And while the earthquake was fairly strong, the West Coast and Alaska Tsunami Warning Center said no damaging tsunami was expected as a result. "Some of these areas may experience non-damaging sea level changes," the agency said.

On March 24, 1980, a strong 6.9-magnitude earthquake struck the United States Minor Outlaying Islands, 74.5 miles (120 kilometers) east of Saturday's earthquake. No casualties were reported.

And on February 27, 1987, a strong 6.9-magnitude earthquake struck approximately 98.1 miles (158 kilometers) east of Saturday's earthquake. No casualties were reported in that earthquake either.

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