2025-07-04T18:59:12.13Z37.923999786377-122.0810012817385.28000020980835manualconfirmedUSGS1.66md1Origin/20250704190111.779831.331270Magnitude/20250704190111.779882.331271USGS2 km NNW of Walnut Creek, CAregion namenccatalognc75205412contributorID