2026-01-28T15:04:03.14Z37.7731666564941-121.9503326416027.42999982833862manualconfirmedUSGS1.63md1Origin/20260128150633.310358.76133Magnitude/20260128150633.310406.76134USGS3 km ESE of San Ramon, CAregion namenccatalognc75303161contributorID