Overview
- The U.S. Geological Survey recorded a preliminary magnitude 3.4 earthquake at about 5:37 a.m. Wednesday with an epicenter roughly 3.7–4 miles southeast of Ontario and a depth near 4 miles.
- The USGS Interactive Map logged felt reports from Irvine, Anaheim, Menifee, Riverside, San Bernardino and West Covina.
- The USGS Felt Report received 226 responses, and most respondents described the movement as light.
- San Bernardino County asked residents to report whether they felt the tremor on social media and there were no immediate reports of damage or injuries.
- Small, shallow earthquakes are common in Southern California and the USGS may refine the quake’s magnitude or location as it reviews more seismic data.