There have been more than 400 tremors recorded in this swarm as of May 11. How unusual is this?

A sudden burst of seismic activity deep in the Nevada desert is raising eyebrows among scientists — and fueling speculation ...

Dozens of earthquakes rattled parts of California on Saturday and into Sunday in what experts call an earthquake swarm, with many centered near Brawley, according to the U.S. Geological Survey.

BRAWLEY, Calif. -- A seismic swarm of hundreds of earthquakes shook parts of California this weekend. A swarm is a group of ...

A swarm of more than one hundred earthquakes rattled Southern California's Imperial County on Saturday, with the largest reported temblor registering at a magnitude of 4.5, according to the United ...

No damage reported in earthquake swarm centered in Brawley.

COLUMBIA — You might have missed it, but the Midlands was hit by yet another earthquake this week. Over the past several years, the Midlands has experienced a higher-than-normal (at least from a human ...

Seismic activity returned Friday, as South Carolina’s fourth earthquake of May was recorded near the Palmetto State’s capital ...

It’s been a jiggly week in the east San Francisco Bay Area. The USGS recorded 120 earthquakes all centered within a few miles of the city of San Ramon. Most were far too small to be felt, but six made ...