A series of small earthquakes struck the San Ramon area early Monday morning, in the latest swarm to hit the East Bay community over the past few weeks.

CONTRA COSTA COUNTY, CA - Monday morning, a preliminary 3.0 magnitude quake was detected near San Ramon, according to the U.S. Geological Survey.

The United States Geological Survey put out a false alarm for a 5.9 earthquake east of Dayton, Nevada, on Thursday morning.

“On December 4, 2025, the ShakeAlert EEW system released an incorrect alert for a magnitude 5.9 earthquake near Reno and Carson City, Nevada,” the statement read. “The event did not occur, and has been deleted from USGS websites and data feeds. The USGS is working to understand the cause of the false alert.”

CONTRA COSTA COUNTY, CA - the U.S. Geological Survey reported that a preliminary 2.1 magnitude quake struck close to San Ramon Monday morning.

A small earthquake was detected miles from two North Carolina tourist communities in the Blue Ridge Mountains on Friday, federal seismologists reported. The 2.1 magnitude earthquake registered at 4:11 p.m. about 2.5 miles southeast of Weaverville and 9 miles south of Asheville, according to the U.S. Geological Survey.

A magnitude 7.6 earthquake centered in the Pacific Ocean some 45 miles west of Misawa, Japan, shook the northern part of the archipelago around 11:30 p.m. local time, according to the United States Geological Survey (USGS).

A tsunami warning has been issued for parts of Japan’s east coast after a magnitude-7.6 earthquake struck off the coastline Monday, according to Japan’s Meteorological Agency.