The U.S. Geological Survey reports that a series of earthquakes, led by a magnitude 4.0 event near Santa Rosa and Glen Ellen in Sonoma County, produced light to moderate shaking felt across the broader Bay Area and as far as Sacramento and San Jose. Subsequent aftershocks ranging from magnitude 3.4 down to the mid‑2 range caused only minor disturbances such as small spills and dropped boxes at local businesses, while authorities encouraged residents to submit shaking reports and review standard earthquake safety guidance.