Update: Seismic activity on Dec. 7 - 3.3 magnitude earthquake close to San Clemente, CA reported

ORANGE COUNTY, CA - on Sunday around midday, a 3.3 magnitude quake was registered near San Clemente, according to the U.S. Geological Survey.

Nevada earthquakes? USGS sent an alert but here's what really happened

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.

False Report of 5.9 Earthquake Sends Phones Buzzing in Nevada

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.

Earthquake of magnitude 2.4 detected close to Cobb, CA on Dec. 6

LAKE COUNTY, CA - A 2.4 magnitude quake was registered near Cobb Saturday afternoon, according to the U.S. Geological Survey.

ShakeAlert sends false alarm about magnitude 5.9 earthquake in California, Nevada

The ShakeAlert system that warns about imminent shaking arriving from earthquakes sent a false alarm across California on Thursday morning for a magnitude 5.9 temblor that did not happen.
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