VENTURA COUNTY, CA - A 3.3 magnitude quake was reported close to Ojai Tuesday morning, according to the U.S. Geological Survey.

Many residents received an earthquake alert in Nevada on Thursday morning. According to an initial alert from the US Geological Survey, the 5.9 magnitude quake allegedly struck just after 8 a.m. east of Dayton, Nevada. Then, moments later, the USGS deleted the event from its website. KTVU reached out to the USGS to understand this discrepancy.

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.

SAN BERNARDINO COUNTY, CA - A preliminary 3.1 magnitude quake was registered near Devore Tuesday evening, according to the U.S. Geological Survey.

The United States Geological Survey quickly deleted the alert, saying it had been sent in error. “This isn’t a good look,” one earthquake expert said.

The U.S. Geological Survey is investigating the cause of a false alert sent out reporting a 5.9 earthquake that never occurred Thursday morning. An automatic detection system triggered cell phone alerts to a large

A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports.

Aftershocks have been recorded for both earthquakes. On Dec. 8, Japanese authorities warned an even more powerful earthquake could strike within the next week and called on residents from the northernmost island of Hokkaido down to Chiba prefecture, east of Tokyo, to be on high alert.

The United States Geological Survey shared and removed a report of a 5.9-magnitude earthquake within a 30-minute span on Thursday (December 4). The earthquake was reported to have struck near Dayton, Nevada, at 8:06 a.m. local time and was reported to have a depth of nearly five miles. The post was then deleted as of 8:20 a.m. local time.

TONOPAH, Nev. -- The U.S. Geological Service is reporting that a magnitude-6.4 earthquake struck in remote western Nevada early Friday. The temblor was reported at 4:03 a.m. about 35 miles outside Tonopah, just east of the Sierra Nevada range. The initial ...