BRAWLEY – (INT) - A swarm of more than 350 earthquakes reaching up to magnitude 4.7 rattled Brawley in Imperial County near the Salton Sea, the U.S. Geological Survey reports.

The swarm began with a quake at 4:14 pm Saturday 2 miles southwest of Brawley, the USGS reported. More have followed overnight with the most recent, according to the USGS.

A Shake Alert was sent on the earthquake. “The Imperial Valley has seen dozens if not hundreds of these sort of swarms over the century we have recorded,” said seismologist Lucy Jones on Blueskey. “A swarm is a group of quakes (dozens to thousands) where there are many quakes close in size and no obvious mainshock.”

Story Date: May 15, 2026