CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a 4.2 magnitude quake hit close to San Ramon Monday morning.

At least eight quakes have rattled the East Bay city.

The biggest quake was a notable 4.2-magnitude shaker just after 7 a.m. amid an hour-long swarm that began with a 3.9-magnitude earthquake at 6:30 a.m.

CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.3 magnitude quake shook close to San Ramon Monday night.

As the few small earthquakes shake the same place in minutes, what does it tell people who experienced the shaking? In the California and New Mexico regions, relatively small tremors of late have been significant in their arrival: in close bursts and shallow depths.

A swarm of earthquakes rattled the San Francisco Bay Area early Monday morning, centered around San Ramon in California, according to the U.S. Geological Survey (USGS). The strongest tremor was a magnitude 4.

Plans for 8,400 new homes at San Ramon's Bishop Ranch is an ambitious pivot that reflects a broader reckoning with the struggles of the suburban American office park in the remote work era.

The seven-week course will teach residents about topics like city administration, budgeting, infrastructure, and public safety.