Overview
- A USGS‑recorded swarm of 90 micro‑quakes, measuring 1.0 to 2.7 in magnitude, rattled Lennox and Westmont over an 18‑hour span from Friday night into Saturday.
- The seismic activity was concentrated along the Newport‑Inglewood Fault Zone, a long urban strike‑slip fault that runs roughly from Culver City to Newport Beach.
- Residents across South Los Angeles reported light shaking but officials say there have been no reported injuries or damage linked to the swarm.
- The USGS and seismologists caution that earthquake swarms lack a single mainshock and are not reliable predictors of a larger rupture, and they say short‑term heavy rain is unlikely to have triggered these events.
- Researchers point to a 2017 study that found evidence the Newport‑Inglewood Fault produced much larger ancient quakes—possibly up to about magnitude 7.5—which keeps the fault under close monitoring and drives continued preparedness messaging for nearby communities.