Two small earthquakes shook the area near Concrete on Saturday night.
The Pacific Northwest Seismology Network reported that a magnitude 1.5 quake occurred at 8:36 p.m. about 6.1 miles from Concrete. The depth was 2.1 miles.
A magnitude 2.0 quake occurred in the same area three minutes later. The depth was 0.0 miles.
Several people reported that they felt the quake.
Elaine M Loto'aniu, who lives on South Skagit Highway in the Cape Horn Community, said her bed started shaking and the walls moved slightly.
"It only lasted long enough for me to realize it was an earthquake," she said.
Julie Vogt, who lives in Concrete, also reported hearing a rumble and feeling her home shaking for a second or two.