2025-12-25T13:48:45.79Z36.7976684570312-121.4086685180666.21999979019165manualconfirmedUSGS1.55md1Origin/20251225135027.935568.49303Magnitude/20251225135027.935617.49304USGS4 km WSW of Ridgemark, CAregion namenccatalognc75286126contributorID