2025-12-21T20:50:19.8Z36.7826652526855-121.4083328247077.28999996185303manualconfirmedUSGS1.94md1Origin/20251221205217.469281.18647Magnitude/20251221205217.46933.18648USGS5 km SW of Ridgemark, CAregion namenccatalognc75284306contributorID