A rare series of earthquakes jolted the eastern Washington city of Spokane, breaking some dishes but causing no serious damage or injuries.
That quake had a magnitude of 3.4 and was centered about two miles southwest of Spokane, said Waverly Person of the National Earthquake Information Center in Golden, Colo.
A second quake with a magnitude of 2.8 was reported about six miles northwest of the city about 8:01 a.m. A third quake with a magnitude of about 2.0 was felt about 10 minutes later, Person said.
An earthquake of magnitude 2.5 to 3.0 is the smallest generally felt by people. A magnitude 4.0 quake can cause moderate damage.
A series of aftershocks continued to shake the ground throughout the day.