2025-09-14T10:41:56.25Z36.7933333333333-121.4166666666674.85manualconfirmedUSGS0.8md1Origin/20250915171736.704998.557522Magnitude/20250915171736.70505.557523USGS5 km WSW of Ridgemark, CAregion namenccatalognc75237672contributorID