WALLA WALLA -- The National Earthquake Information Center in Golden, Colo., reported a magnitude-3.5 earthquake Monday night in southeast Washington.
There were no immediate reports of damage.
By late Monday night, the center's website had received only one report from a resident who felt the quake.
The quake was centered about 18 miles west of Walla Walla at a depth of about eight miles.
The earthquake information center is part of the U.S. Geological Survey.