Overview
- USGS reported a swarm near Brawley, California, with the largest quake measured at magnitude 4.5.
- The sequence started northwest of the city and built over several hours to the 4.5 event about a mile from town.
- Sixteen earthquakes reached magnitude 2.5 or higher, with notable shocks at 4.0, 3.6, and 3.1.
- Most tremors were under magnitude 2.0, and agencies said they are continuing to track the activity.
- Brawley sits in a fault network that links the Brawley and Imperial faults to the San Andreas, a setup the regional data center says is prone to recurring swarms.