2025-12-15T18:27:15.08Z37.3356666564941-121.6959991455088.02999973297119manualconfirmedUSGS1.64md1Origin/20251215182936.579826.236937Magnitude/20251215182936.579879.236938USGS12 km ESE of Alum Rock, CAregion namenccatalognc75280416contributorID