2026-03-18T02:33:58.39Z37.787334442139-121.97516632086.5300002098083manualconfirmedUSGS0.89md1Origin/20260318024148.256754.151705Magnitude/20260318024148.256835.151706USGS1 km NNE of San Ramon, CAregion namenccatalognc75329417contributorID