Overview
- The earthquakes that rattled Imperial County over the weekend have now slowed, with more than 350 recorded and a strongest jolt of magnitude 4.7 just after midnight Sunday.
- USGS tracked a tight cluster near Brawley that included several magnitude 3 to 4 quakes at shallow depths of about 5 to 10 miles, which can feel sharper at the surface.
- USGS ShakeAlert sent warnings to people in the area during the stronger shaking.
- The City of Brawley activated its emergency operations center as Cal OES coordinated checks, and officials reported no major injuries with isolated water-line breaks and minor road damage.
- Experts say the Brawley Seismic Zone sits between the Imperial and San Andreas faults and often produces swarms that rarely lead to a much larger mainshock, though aftershocks can continue.