A handful of people reported feeling the 3.4 quake that hit shortly before 8 p.m. Thursday.
Geophysicist Randy Baldwin of the U.S. Geological Survey's National Earthquake Information Center in Golden, Colo., says small quakes in that area would not be expected to cause any damage on land.
The quakes were centered about 30 miles west of Waldport. Others included a magnitude 3.0 and a 2.6.
Baldwin says such quakes are fairly common.