2026-03-30T08:10:47.5Z37.752666473389-121.931167602548.5299997329712manualconfirmedUSGS1.32md1Origin/20260330081306.784389.60255Magnitude/20260330081306.784452.60256USGS5 km SE of San Ramon, CAregion namenccatalognc75335382contributorID