Overview
- A preliminary 3.2-magnitude earthquake struck early Friday, Oct. 9, centered about 1 to 1.24 miles southwest of Signal Hill and measured at a shallow depth of roughly 7.6 miles.
- No injuries or damage were immediately reported after the quake, according to local media summaries of USGS data.
- The U.S. Geological Survey has asked residents who felt shaking to submit observations through its public reporting system to refine intensity maps.
- Seismologists place the event in a recent run of small, shallow Southern California tremors, including a separate roughly 3.5-magnitude offshore tremor earlier in the week, which are used to reassess regional fault stress but do not reliably predict larger quakes.
- Officials say residents should review basic preparedness steps such as securing heavy items, making an emergency kit, and practicing drop-cover-hold on while monitoring USGS updates for any aftershocks.