2026-03-07T10:25:53.52Z37.7666664123535-121.9359970092775.63000011444092manualconfirmedUSGS1.74md1Origin/20260307102820.526374.34853Magnitude/20260307102820.526437.34854USGS4 km ESE of San Ramon, CAregion namenccatalognc75323777contributorID