2025-12-02T18:09:27.76Z37.4303321838379-121.777832031256.6100001335144manualconfirmedUSGS1.49md1Origin/20251202181142.830388.120529Magnitude/20251202181142.830438.120530USGS8 km NNE of Alum Rock, CAregion namenccatalognc75273196contributorID