2026-04-06T03:47:45.0000Z36.754333496094-121.4286651611322.159999847412manualconfirmedUSGS1.04md1Origin/20260406034953.934909.150875Magnitude/20260406034953.934971.150876USGS9 km SW of Ridgemark, CAregion namenccatalognc75339627contributorID