A shake alert went out over the U.S. Geological Survey's early warning system on Dec. 4, warning that a 5.9 earthquake near Carson City in western Nevada could produce heavy shaking in the region. But moments later, the survey announced the alert, which was sent to people as far west as San Francisco, was a false alarm.

An alert that notified Bay Area residents of a 5.9 earthquake Thursday morning in Nevada was deleted by the U.S. Geological Survey. The ShakeAlert message at 8:08 a.m. said the quake was about 15 miles east of Carson City, near Dayton. Within minutes, though, the notification was deleted.

HUMBOLDT COUNTY, CA - the U.S. Geological Survey reported that a preliminary 3.4 magnitude quake rattled close to Fortuna Friday afternoon.

UNR seismology lab says the ShakeAlert warning of a 5.9 east of Dayton was wrong.

USGS is investigating why an alert was sent out for a quake that didn't happen.

Over 200 people have reported feeling a 3.2-magnitude earthquake that struck Sunday morning in the Willamette Valley. The U.S. Geological Survey said the quake was recorded shortly before 8 a.m. about three miles southeast of Amity,

There were no immediate reports of major damage, but the state transportation department said it would survey roads, bridges and other infrastructure.

Did you feel them? Several earthquakes struck south of the Bay Area on Black Friday. The strongest quake was a magnitude 3.4, according to the USGS, but came after two days of similar sized earthquakes in the area of Gilroy and San Juan Bautista.