Sacramento, CA – A series of small earthquakes shook regions across California on Sunday, lighting up the state’s fault line from the North Coast to Southern California, according to preliminary data from the U.S. Geological Survey (USGS).
The strongest event, a magnitude 3.5 quake, was recorded 18 kilometers southeast of Redway in Humboldt County around 2:06 p.m. (UTC). Other notable tremors included a magnitude 3.1 near Johannesburg, 2.9 near Orinda, and 2.8 near Santa Paula, with several others striking near Huron, Lopez Point, and Westley throughout the day.
According to the California Integrated Seismic Network (CISN), the quakes ranged from 2.4 to 14.8 kilometers deep, aligning closely with the San Andreas Fault system. While none of the events caused damage, some residents across Northern and Central California reported light shaking through the “Did You Feel It?” program.
A separate magnitude 2.9 quake also struck just west of Progreso, Baja California, Mexico, near the U.S. border, extending the day’s seismic activity southward along the Pacific fault zone.
USGS experts note that while clusters of smaller earthquakes are common in California, Sunday’s pattern highlights ongoing stress along key segments of the state’s primary fault systems.
No injuries or structural damage have been reported. Residents are reminded to keep emergency kits stocked and review local earthquake preparedness plans.
